Marseille, France (CNN) Initial tests on the flight data recorder recovered from downed Germanwings Flight 9525 show that co-pilot Andreas Lubitz purposely used the controls to speed up the plane's descent, according to the French air accident investigation agency, the BEA. 
 
 The flight data recorder, or "black box," was found Thursday by recovery teams that have spent days since the March 24 crash scouring the mountainside in the French Alps where the plane went down. 
 
 A statement from the BEA on Friday said its teams had immediately begun to investigate its contents. 
 
 "The initial readout shows that the pilot present in the cockpit used the autopilot to put the (airplane) into a descent towards an altitude of 100 (feet) then, on several occasions during the descent, the pilot modified the autopilot setting to increase the speed of the (airplane) in descent," it said. 
 
 "Work is continuing to establish the precise history of the flight." 
 
 Evidence from the plane's cockpit voice recorder, recovered swiftly after the crash, had already led investigators to believe that Lubitz acted deliberately to bring down the plane, killing all 150 people on board. 
 
 And prosecutors in Germany said Thursday that an analysis of a tablet device retrieved from the 27-year-old's apartment in Dusseldorf revealed that he had researched suicide methods and cockpit door security on the Internet. 
 
 The correspondence and search history on the device demonstrated that the co-pilot used it from March 16 to March 23, Dusseldorf prosecutor Christoph Kumpa said. 
 
 The search history was not deleted and also revealed searches concerning medical treatment, the prosecutor said. 
 
 DNA profiles 
 
 Investigators have focused on Lubitz's health as they try to establish his motivation. 
 
 But the missing "black box" was expected to yield important evidence about the plane's final minutes. 
 
 A female police officer digging by hand for clothes in a ravine that been searched previously found the flight data recorder Thursday afternoon about 8 inches (20 centimeters) below the surface, Marseille prosecutor Brice Robin told reporters. 
 
 Usually white with florescent orange, this discovered recorder lived up to its name as a black box because fire had darkened it with ashes. 
 
 In addition, out of more than 2,000 DNA samples collected from the crash site, lab workers have isolated 150 DNA profiles, Robin told reporters. 
 
 "That does not mean we've identified" the crash's 150 victims, Robin said -- noting the recovered DNA still must be compared with DNA submitted by the families of those who died in the crash. 
 
 Authorities have also found 470 personal effects at the site, according to Robin. That number includes 40 cell phones, though all those were badly damaged. Robin cast doubt that any useful information could be retrieved from those phones, given their condition. 
 
 JUST WATCHED French reporter says he's seen Germanwings video Replay More Videos ... MUST WATCH French reporter says he's seen Germanwings video 03:06 
 
 That view is consistent with French officials' claims Wednesday insisting that two publications, German daily Bild and French Paris Match, were wrong to report that cell phone video showed the harrowing final seconds from on board the flight. 
 
 'Premeditated murder' claim 
 
 Noting he's made a criminal request to German authorities but is for now conducting his own investigation, the French prosecutor said he is tasked with an involuntary homicide investigation. 
 
 But Robin noted that Lubitz made voluntary actions -- such as guiding the plane toward the mountain and reducing its speed to prevent alarms from going off -- and was "alive and conscious" to the very end. 
 
 A European official government official with detailed knowledge of the investigation said that Lubitz's actions amount to "premeditated murder." 
 
 While cautioning that there are still many holes in understanding Lubitz's motivation, the disclosures about his Internet searches show that he planned to do what he was going to do, according to this official. 
 
 Source: Lubitz saw multiple doctors 
 
 It is becoming increasingly clear to investigators that Lubitz was "very afraid" he would lose his license to fly because of his medical issues, a law enforcement source with detailed knowledge of the investigation told CNN on Thursday. 
 
 It's already emerged that Lubitz had battled depression years before he took the controls of Flight 9525 and that he had concealed from his employer recent medical leave notes saying he was unfit for work. 
 
 But the law enforcement source said that after a severe depressive episode in 2009, Lubitz relapsed with severe depression and stress in late 2014. 
 
 In the weeks leading up to the crash, Lubitz was shopping doctors, seeing at least five, perhaps as many as six, the source said, as he kept going from one doctor to the next seeking help, including from a sleep specialist. He was prescribed powerful medication, though it's not clear he was taking it. ||||| Dusseldorf, Germany (CNN) Analysis of a tablet device belonging to Germanwings Flight 9525 co-pilot Andreas Lubitz shows he researched suicide methods on the Internet in the days leading up to the crash, a German prosecutor said Thursday. 
 
 Dusseldorf prosecutor Christoph Kumpa said that on one day Lubitz also "searched for several minutes with search terms relating to cockpit doors and their security measures." 
 
 Police analysis of the correspondence and search history on the device, retrieved from Lubitz's Dusseldorf apartment, demonstrated that the co-pilot used it from March 16 to March 23, Kumpa said. 
 
 The search history was not deleted and also revealed searches concerning medical treatment, the prosecutor said. 
 
 Lubitz is suspected of deliberately bringing down Germanwings Flight 9525 in the French Alps on March 24, killing all 150 on board. Investigators have since focused on his health as they try to establish his motivation. 
 
 Noting he's made a criminal request to German authorities but is for now conducting his own investigation, the prosecutor in Marseille, France, said he is tasked with an involuntary homicide investigation. But prosecutor Brice Robin noted that Lubitz made voluntary actions -- such as guiding the plane toward the mountain and reducing its speed to prevent alarms from going off -- and was "alive and conscious" to the very end. 
 
 A European official government official with detailed knowledge of the investigation said that Lubitz's actions amount to"premeditated murder." 
 
 While cautioning that there are still many holes in understanding Lubitz's motivation, the disclosures about his Internet searches show that he planned to do what he was going to do, according to this official. 
 
 Second 'black box' found 
 
 As authorities try to figure out what was on Lubitz's electronic devices, they got another big break about what was happening inside Airbus 320 that went down -- its flight data recorder. 
 
 The jetliner's cockpit voice recorder was located shortly after the plane crashed. Now, investigators have both "black boxes," as the devices are called, and the details that they might provide. 
 
 A female police officer digging by hand for clothes in a ravine that been searched previously found the flight data recorder on Thursday afternoon about 8 inches (20 centimeters) below the surface, Robin told reporters. 
 
 Normally white with florescent orange, this discovered recorder lived up to its name as a black box because fire had darkened it with ashes. Even with this damage, the Marseille prosecutor said that investigators should be able to get useful information out of it. 
 
 "We will be able to identify the speed, the altitude and the way the pilot acted ... which will be critical," said Robin. 
 
 Prosecutor: 150 sets of DNA recovered 
 
 The voice data recorder is one of many items uncovered at the crash site in the southern French Alps. 
 
 Authorities have found 470 personnel effects there, according to Robin. That number includes 40 cell phones, though all those were badly damaged. Robin cast doubt that any useful information could be retrieved from those phones, given their condition. 
 
 JUST WATCHED French reporter says he's seen Germanwings video Replay More Videos ... MUST WATCH French reporter says he's seen Germanwings video 03:06 
 
 This is consistent with French officials' claims Wednesday insisting that two publications, German daily Bild and French Paris Match, were wrong to report that cell phone video showed the harrowing final seconds from on board the flight. 
 
 More importantly, investigators have isolated 150 different sets of DNA -- a number that corresponds with the number of people on Flight 9525. Still, the Marseille prosecutor cautioned, "It doesn't mean we have identified 150 victims. We need to compare (the recovered DNA to) DNA from the families and the deceased." 
 
 Robin estimated "it will take between three to five weeks, if all goes well" for the passengers' loved ones to get the remains. 
 
 But the mourning is already underway. 
 
 A memorial stone set up in the village of Le Vernet, the nearest accessible point to the crash site, has become a place of pilgrimage for those with relatives and friends on board the plane. 
 
 People in the German town of Haltern recently came together for a memorial service to remember 16 students and two teachers lost in the crash. 
 
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 Push to take steps to prevent a repeat 
 
 Providing some closures to the families of those passengers and crew members is a top priority for authorities. 
 
 So, too, is doing what they can to figure out why this happened and prevent similar tragedies. 
 
 There are new calls from aviation experts to develop and deploy enhanced crash avoidance software that could take control of an aircraft away from a pilot and steer it to a safe altitude. 
 
 Photos: Germanwings plane crashes in France Photos: Germanwings plane crashes in France A recovery crew works among debris of Germanwings Flight 9525 at the crash site near Seyne-les-Alpes, France, on Friday, April 3. The crash killed all 150 people aboard and has raised questions about the co-pilot's mental state. Hide Caption 1 of 26 Photos: Germanwings plane crashes in France French Gen. David Galtier holds up a picture of the second black box from Germanwings 9525 during a news conference in Marseille, France, on Thursday, April 2. The flight data recorder shows that co-pilot Andreas Lubitz purposely used the controls to speed up the plane's descent, investigators said. Hide Caption 2 of 26 Photos: Germanwings plane crashes in France Rescue workers recover debris from the crash site in the French Alps on Tuesday, March 31. Flight 9525 was traveling from Barcelona, Spain, to Dusseldorf, Germany, when it crashed. Hide Caption 3 of 26 Photos: Germanwings plane crashes in France A helicopter drops rescue workers next to crash debris near Seyne-les-Alpes, France, on Sunday, March 29. Hide Caption 4 of 26 Photos: Germanwings plane crashes in France Forensic experts work near the crash site on Thursday, March 26. Hide Caption 5 of 26 Photos: Germanwings plane crashes in France Journalists stand in front of the Westerwald airfield in Montabaur, Germany, on March 27. Lubitz reportedly learned to fly here. Hide Caption 6 of 26 Photos: Germanwings plane crashes in France Investigators carry a computer from the home of Lubitz's parents in Montabaur, Germany, on Thursday, March 26. Hide Caption 7 of 26 Photos: Germanwings plane crashes in France A police officer stands guard March 26 at an apartment building where Lubitz was thought to have lived in Dusseldorf. Hide Caption 8 of 26 Photos: Germanwings plane crashes in France A helicopter lifts a rescue worker from the crash site on March 26. Hide Caption 9 of 26 Photos: Germanwings plane crashes in France Rescue workers continue to search the site of the crash on March 26. Hide Caption 10 of 26 Photos: Germanwings plane crashes in France Search-and-rescue teams land near the crash site on Wednesday, March 25. Hide Caption 11 of 26 Photos: Germanwings plane crashes in France Debris from the plane is seen along a mountainside on March 25. Hide Caption 12 of 26 Photos: Germanwings plane crashes in France French military personnel move up a mountainside March 25 near Seyne-les-Alpes. Hide Caption 13 of 26 Photos: Germanwings plane crashes in France The cockpit voice recorder of the Germanwings jet appears in this photo provided by the French air accident investigation bureau on March 25. The device is designed to capture all sounds on a plane's flight deck. Hide Caption 14 of 26 Photos: Germanwings plane crashes in France A helicopter comes in to land near Seyne-les-Alpes, the staging ground for search efforts, on March 25. Hide Caption 15 of 26 Photos: Germanwings plane crashes in France Rescue workers and members of the French Gendarmerie gather in Seyne-les-Alpes on Tuesday, March 24, as search-and-rescue teams struggle to reach the remote crash. Hide Caption 16 of 26 Photos: Germanwings plane crashes in France Wreckage is seen at the crash site on March 24. Hide Caption 17 of 26 Photos: Germanwings plane crashes in France Response teams gather in Seyne-les-Alpes on March 24. Hide Caption 18 of 26 Photos: Germanwings plane crashes in France Relatives of the flight's passengers arrive at the airport in Barcelona on March 24. Hide Caption 19 of 26 Photos: Germanwings plane crashes in France People hold hands walking through the Dusseldorf Airport on March 24. Hide Caption 20 of 26 Photos: Germanwings plane crashes in France The arrivals board at the Dusseldorf Airport shows Germanwings Flight 9525 without a status on March 24. Hide Caption 21 of 26 Photos: Germanwings plane crashes in France People arrive at the Dusseldorf Airport on March 24. Hide Caption 22 of 26 Photos: Germanwings plane crashes in France An employee of Swissport, the handling agent of Germanwings flights from Barcelona, speaks by phone at the Barcelona-El Prat Airport on March 24. Hide Caption 23 of 26 Photos: Germanwings plane crashes in France Relatives of people involved in the crash arrive at the Barcelona airport on March 24. Hide Caption 24 of 26 Photos: Germanwings plane crashes in France A man in Madrid looks at a monitor with a map, released from the Flightradar24 website, showing the point where the plane's radar signal went missing. Hide Caption 25 of 26 Photos: Germanwings plane crashes in France This undated file photo shows the Germanwings Airbus A320 that crashed. Germanwings is a low-cost airline owned by the Lufthansa Group. Hide Caption 26 of 26 
 
 The idea is not new. In fact more than 10 years ago following 9/11, Airbus, the manufacturer of the doomed aircraft, was working to d‎evelop aircraft crash avoidance software with tech giant Honeywell -- in part to prevent jetliners from being flown into large buildings or mountains. But the project was ultimately scrapped. 
 
 Still, there's also a widespread view that the best way to understand what happened in this case is to understand Lubitz. 
 
 Source: Lubitz saw multiple doctors 
 
 It is becoming increasingly clear to investigators that Lubitz was "very afraid" he would lose his license to fly because of his medical issues, a law enforcement source with detailed knowledge of the investigation told CNN. 
 
 It's already emerged that Lubitz had battled depression years before he took the controls of Flight 9525 and that he had concealed from his employer recent medical leave notes saying he was unfit for work. 
 
 But the law enforcement source said that after a severe depressive episode in 2009, Lubitz relapsed with severe depression and stress in late 2014. 
 
 In the weeks leading up to the crash, Lubitz was shopping doctors, seeing at least five, perhaps as many as six, the source said, as he kept going from one doctor to the next seeking help. 
 
 The 27-year-old was having trouble sleeping, and one of the doctors he saw recently was a sleep specialist, the law enforcement source said. Lubitz apparently told some doctors that he was afraid of losing his pilot's license because of his medical issues. 
 
 The doctors knew he was a pilot and gave him a "not fit to work" notice, which he was apparently required to give to his employer, even though he didn't, the source said. Officials have found doctors handled the matter the way they were supposed to and found no negligence on their part. 
 
 Thinking he would stay home from work based on the sick notes, Lubitz was prescribed a lot of medication, including "heavy depression medicine" that would have been "very heavy" on the body and "critical to a pilot," the source said. 
 
 However, the law enforcement source doesn't think Lubitz was using the medicine while working, because investigators interviewed a pilot he flew with the day before who said he was "completely normal" with no problem whatsoever. 
 
 Inside Lubitz's apartment, investigators found a couple of notes with only a few words, involving stress and his pilot's license, the source added. He didn't know if Lubitz wrote these down while talking to someone on the phone or wrote the memo to remind himself of something. 
 
 JUST WATCHED Prosecutors: Co-pilot suicidal at one time Replay More Videos ... MUST WATCH Prosecutors: Co-pilot suicidal at one time 00:10 
 
 Lubitz told his Lufthansa flight training school in 2009 that he had a "previous episode of severe depression," the German airline confirmed Tuesday. Lufthansa is the parent company of budget airline Germanwings. 
 
 Confidentiality issues 
 
 German officials announced that a new task force would look at issues including medical procedures for pilots and cockpit door locking mechanisms after the devastating crash. 
 
 The cockpit voice recorder revealed that Lubitz had locked the pilot, Patrick Sondenheimer , out of the cockpit before putting the plane into its fatal descent, said Robin, the Marseille prosecutor. 
 
 Cockpit doors on planes were strengthened following the events of September 11, 2001, making it impossible for the captain to force his way in. 
 
 German Transport Minister Alexander Dobrindt told the news conference Thursday that the task force would prioritize questions around the cockpit door locking mechanism and procedures for checking pilots' medical and psychological well-being. 
 
 It would seek to move quickly, he said, but would not make rash decisions. 
 
 Klaus-Peter Siegloch, head of the German Aviation Association, emphasized issues around confidentiality when it comes to a pilot's medical records. 
 
 "The confidence our pilots have in our medical doctors is of high importance," he said. "I believe if there is a lifting of doctor-patient confidentiality, then possibly pilots will not trust in medical doctors and that will make the situation worse." 
 
 The task force will bring together government officials with representatives of the German airline companies, the German Aviation Association and the Federation of German Airlines. ||||| Mountain troop members prepare to leave for the crash site, Thursday, April 2, 2015 in Seyne-les-Alpes, France. Investigators believe co-pilot Andreas Lubitz intentionally crashed the Germanwings A320... (Associated Press) 
 
 BERLIN (AP) — German prosecutors say the co-pilot of Germanwings Flight 9525 appears to have researched suicide methods and cockpit door security in the days before the plane crashed last week. 
 
 Duesseldorf prosecutors said Thursday investigators found a tablet computer at Andreas Lubitz's apartment. They said they were able to reconstruct searches from March 16 to March 23. 
 
 Investigators believe the 27-year-old Lubitz locked his captain out of the A320's cockpit on March 24 and deliberately crashed the plane. All 150 on board died. 
 
 Prosecutors' spokesman Ralf Herrenbrueck said in a statement that search terms included medical treatment and suicide methods. On at least one day, the co-pilot looked at search terms involving cockpit doors and their security methods. ||||| Dusseldorf, Germany (CNN) Years before he was at the controls of a Germanwings plane that plunged into the French Alps, Andreas Lubitz told the airline he worked for that he'd had a bout with depression. 
 
 Lubitz, the co-pilot of Germanwings Flight 9525 who authorities accuse of deliberately crashing the plane, told his Lufthansa flight training school in 2009 that he had a "previous episode of severe depression," the airline said Tuesday. 
 
 Email correspondence between Lubitz and the school discovered in an internal investigation, Lufthansa said, included medical documents he submitted in connection with resuming his flight training. 
 
 The announcement indicates that Lufthansa, the parent company of Germanwings, knew of Lubitz's battle with depression, allowed him to continue training and ultimately put him in the cockpit. 
 
 Lufthansa, whose CEO previously said Lubitz was 100% fit to fly, described its statement Tuesday as a "swift and seamless clarification" and said it was sharing the information and documents -- including training and medical records -- with public prosecutors. 
 
 It's a development that will likely be a part of the crash investigation, but it's only one piece of the puzzle, CNN aviation correspondent Richard Quest said. 
 
 "We need to know what happened after he returned in 2009 and finished his training, because that tells us whether there was the correct procedure and process," he said. 
 
 A Lufthansa spokesperson told CNN on Tuesday that Lubitz had a valid medical certificate, had passed all his examinations and "held all the licenses required." 
 
 JUST WATCHED Prosecutors: Co-pilot suicidal at one time Replay More Videos ... MUST WATCH Prosecutors: Co-pilot suicidal at one time 00:10 
 
 Possible motive: Fear of losing license 
 
 The details about Lubitz's correspondence with the flight school during his training were among several developments as investigators continued to delve into what caused the crash and Lubitz's possible motive for downing the jet. 
 
 Earlier, a spokesman for the prosecutor's office in Dusseldorf said Lubitz suffered from suicidal tendencies at some point before his aviation career. 
 
 Medical records reveal that Lubitz was suicidal at one time and underwent psychotherapy before he got his pilot's license, prosecutor's spokesman Christoph Kumpa said. 
 
 Kumpa emphasized there's no evidence suggesting Lubitz was suicidal or acting aggressively before the crash. 
 
 Investigators are looking into whether Lubitz feared his medical condition would cause him to lose his pilot's license, a European government official briefed on the investigation into last week's crash told CNN on Tuesday. 
 
 While flying was "a big part of his life," the source said, it's only one theory being considered. 
 
 Another source, a law enforcement official briefed on the investigation, also told CNN that authorities believe the primary motive for Lubitz to bring down the plane was that he feared he would not be allowed to fly because of his medical problems. 
 
 Lubitz's girlfriend told investigators he had seen an eye doctor and a neuropsychologist, both of whom deemed him unfit to work recently and concluded he had psychological issues, the European government official said. 
 
 Lubitz told the neuropsychologist that he was too stressed with work, the official said. 
 
 But no matter what details emerge about his previous mental health struggles, there's more to the story, said Brian Russell, a forensic psychologist. 
 
 "Psychology can explain why somebody would turn rage inward on themselves about the fact that maybe they weren't going to keep doing their job and they're upset about that and so they're suicidal," he said. "But there is no mental illness that explains why somebody then feels entitled to also take that rage and turn it outward on 149 other people who had nothing to do with the person's problems." 
 
 Video of flight's final seconds? 
 
 Reports say a cell phone video shows the nightmarish final seconds of Germanwings Flight 9525, but a police spokesman said the accounts were "completely wrong." 
 
 French magazine Paris Match and German newspaper Bild reported that a video recovered from a phone at the wreckage site showed the inside of the plane moments before it crashed. 
 
 "One can hear cries of 'My God' in several languages," Paris Match reported . "Metallic banging can also be heard more than three times, perhaps of the pilot trying to open the cockpit door with a heavy object. Towards the end, after a heavy shake, stronger than the others, the screaming intensifies. Then nothing." 
 
 The two publications described the video, but did not post it on their websites. The publications reported that they watched the video, which was found by a source close to the investigation. 
 
 "It is a very disturbing scene," said Julian Reichelt, editor-in-chief of Bild online. 
 
 An official with France's accident investigation agency, the BEA, said the agency is not aware of any such video. 
 
 Lt. Col. Jean-Marc Menichini, a French Gendarmerie spokesman in charge of communications on rescue efforts around the Germanwings crash site, told CNN that the reports were "completely wrong" and "unwarranted." Cell phones have been collected at the site, he said, but that they "hadn't been exploited yet." 
 
 Menichini said he believed the cell phones would need to be sent to the Criminal Research Institute in Rosny sous-Bois, near Paris, in order to be analyzed by specialized technicians working hand-in-hand with investigators. But none of the cell phones found so far have been sent to the institute, Menichini said. 
 
 Asked whether staff involved in the search could have leaked a memory card to the media, Menichini answered with a categorical "no." 
 
 Reichelt told "Erin Burnett: Outfront" that he had watched the video and stood by the report, saying Bild and Paris Match are "very confident" that the clip is real. 
 
 He noted that investigators only revealed they'd recovered cell phones from the crash site after Bild and Paris Match published their reports. 
 
 "That is something we did not know before. ... Overall we can say many things of the investigation weren't revealed by the investigation at the beginning," he said. 
 
 Recovery efforts continue 
 
 While investigators search for clues to Lubitz's motivation, recovery workers continue the grim task of searching for the remains of those killed in the March 24 crash. 
 
 The remains of at least 78 people on board the plane have been identified so far using DNA analysis. 
 
 Naffrechoux warned Monday that "it may not be possible to find the human remains of all the 150 passengers, as some of them may have been pulverized by the crash." 
 
 But French President Francois Hollande, speaking alongside German Chancellor Angela Merkel in Berlin, was more positive, saying that it should be possible to identify all the victims by the end of the week. 
 
 Photos: Germanwings plane crashes in France Photos: Germanwings plane crashes in France A recovery crew works among debris of Germanwings Flight 9525 at the crash site near Seyne-les-Alpes, France, on Friday, April 3. The crash killed all 150 people aboard and has raised questions about the co-pilot's mental state. Hide Caption 1 of 26 Photos: Germanwings plane crashes in France French Gen. David Galtier holds up a picture of the second black box from Germanwings 9525 during a news conference in Marseille, France, on Thursday, April 2. The flight data recorder shows that co-pilot Andreas Lubitz purposely used the controls to speed up the plane's descent, investigators said. Hide Caption 2 of 26 Photos: Germanwings plane crashes in France Rescue workers recover debris from the crash site in the French Alps on Tuesday, March 31. Flight 9525 was traveling from Barcelona, Spain, to Dusseldorf, Germany, when it crashed. Hide Caption 3 of 26 Photos: Germanwings plane crashes in France A helicopter drops rescue workers next to crash debris near Seyne-les-Alpes, France, on Sunday, March 29. Hide Caption 4 of 26 Photos: Germanwings plane crashes in France Forensic experts work near the crash site on Thursday, March 26. Hide Caption 5 of 26 Photos: Germanwings plane crashes in France Journalists stand in front of the Westerwald airfield in Montabaur, Germany, on March 27. Lubitz reportedly learned to fly here. Hide Caption 6 of 26 Photos: Germanwings plane crashes in France Investigators carry a computer from the home of Lubitz's parents in Montabaur, Germany, on Thursday, March 26. Hide Caption 7 of 26 Photos: Germanwings plane crashes in France A police officer stands guard March 26 at an apartment building where Lubitz was thought to have lived in Dusseldorf. Hide Caption 8 of 26 Photos: Germanwings plane crashes in France A helicopter lifts a rescue worker from the crash site on March 26. Hide Caption 9 of 26 Photos: Germanwings plane crashes in France Rescue workers continue to search the site of the crash on March 26. Hide Caption 10 of 26 Photos: Germanwings plane crashes in France Search-and-rescue teams land near the crash site on Wednesday, March 25. Hide Caption 11 of 26 Photos: Germanwings plane crashes in France Debris from the plane is seen along a mountainside on March 25. Hide Caption 12 of 26 Photos: Germanwings plane crashes in France French military personnel move up a mountainside March 25 near Seyne-les-Alpes. Hide Caption 13 of 26 Photos: Germanwings plane crashes in France The cockpit voice recorder of the Germanwings jet appears in this photo provided by the French air accident investigation bureau on March 25. The device is designed to capture all sounds on a plane's flight deck. Hide Caption 14 of 26 Photos: Germanwings plane crashes in France A helicopter comes in to land near Seyne-les-Alpes, the staging ground for search efforts, on March 25. Hide Caption 15 of 26 Photos: Germanwings plane crashes in France Rescue workers and members of the French Gendarmerie gather in Seyne-les-Alpes on Tuesday, March 24, as search-and-rescue teams struggle to reach the remote crash. Hide Caption 16 of 26 Photos: Germanwings plane crashes in France Wreckage is seen at the crash site on March 24. Hide Caption 17 of 26 Photos: Germanwings plane crashes in France Response teams gather in Seyne-les-Alpes on March 24. Hide Caption 18 of 26 Photos: Germanwings plane crashes in France Relatives of the flight's passengers arrive at the airport in Barcelona on March 24. Hide Caption 19 of 26 Photos: Germanwings plane crashes in France People hold hands walking through the Dusseldorf Airport on March 24. Hide Caption 20 of 26 Photos: Germanwings plane crashes in France The arrivals board at the Dusseldorf Airport shows Germanwings Flight 9525 without a status on March 24. Hide Caption 21 of 26 Photos: Germanwings plane crashes in France People arrive at the Dusseldorf Airport on March 24. Hide Caption 22 of 26 Photos: Germanwings plane crashes in France An employee of Swissport, the handling agent of Germanwings flights from Barcelona, speaks by phone at the Barcelona-El Prat Airport on March 24. Hide Caption 23 of 26 Photos: Germanwings plane crashes in France Relatives of people involved in the crash arrive at the Barcelona airport on March 24. Hide Caption 24 of 26 Photos: Germanwings plane crashes in France A man in Madrid looks at a monitor with a map, released from the Flightradar24 website, showing the point where the plane's radar signal went missing. Hide Caption 25 of 26 Photos: Germanwings plane crashes in France This undated file photo shows the Germanwings Airbus A320 that crashed. Germanwings is a low-cost airline owned by the Lufthansa Group. Hide Caption 26 of 26 
 
 A simple stone memorial has been set up at Le Vernet, where grieving relatives of those killed have laid flowers and held prayers. 
 
 Safety investigation 
 
 The BEA, France's accident investigation agency, said its ongoing safety investigation was focusing on a more detailed analysis of the flight history leading up to the crash, based on the audio recovered from the cockpit voice recorder and any other available data. 
 
 "A deliberate act by a man with a disturbed psychological profile is a possible scenario," BEA spokeswoman Martine Del Bono told CNN. "The first step of the investigation is to describe more precisely what happened." 
 
 This will be based mainly on analysis of the cockpit voice recorder, to be supplemented by data from the flight data recorder if it is found, she said. 
 
 "But we will also look at other events with possibly similar scenarios, try to understand if there are systemic weaknesses which may contribute or facilitate such scenarios. 
 
 "We will in particular look at the cockpit door locking as well as the criteria and procedures applied to detect specific psychological profiles."
– There's been a wave of new developments this morning regarding Germanwings co-pilot Andreas Lubitz and the downed flight. German prosecutors say that it appears Lubitz researched both suicide methods and cockpit door security during the period from March 16 to March 23, reports the AP; the crash occurred on March 24. The announcement stems from prosecutors' discovery of an iPad in Lubitz's apartment and a review of its browser history, report the New York Times, which has this statement: "During this time the user was searching for medical treatments, as well as informing himself about ways and possibilities of killing himself. On at least one day the person concerned also spent several minutes looking up search terms about cockpit doors and their safety measures." The revelations come along with the news that the second black-box recorder has been found, reports the AP. Meanwhile, CNN talks to a law enforcement source who says Lubitz went doctor-shopping in advance of the crash: The source says Lubitz saw five to six doctors—including a sleep specialist—and frames that as reflective of his fear that his medical woes would end his career and his desire to find a doctor who could help.