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 Dec. 8, 2015, 9:51 PM GMT / Updated Dec. 9, 2015, 1:27 AM GMT By Pete Williams, Hannah Rappleye, Richard Esposito, Andrew Blankstein and Robert Windrem 
 
 San Bernardino terror couple Syed Rizwan Farook and Tashfeen Malik spent at least a year preparing for their terror attack, NBC News has learned, practicing at a local gun range and making financial plans for their family after their deaths. 
 
 And the husband may have discussed an attack as many as three years ago, law enforcement sources said Tuesday. 
 
 Two sources said Farook and Malik had practiced their shooting skills at a Riverside, California-area gun range for a year or more before last Wednesday’s attack on a holiday office party. They killed 14 people and wounded 21 more with firearms at the Inland Regional Center in San Bernardino. 
 
 Counterterrorism officials also told NBC News that Farook and Malik were making preparations for some time to “take care of both grandma and the baby.” The couple lived in a Redlands, California residence with their 6-month-old daughter and Farook’s 62-year-old mother, Rafia Farook. They left their daughter with Rafia Farook on the morning of the attack. 
 
 Investigators are examining a $28,500 deposit made to Farook’s bank account in the weeks before the Dec. 2 rampage. 
 
 A U.S. counterterrorism official said that he didn’t have details on the transfer, but that it “would be consistent with them making preparations for grandma and the kid.” 
 
 “They had purposely thought through that problem,” said the official. “There were other indications of preparations.” 
 
 Reuters reported that the loan to Farook was made by the online lender Prosper. In a statement, Prosper said that the company is "prohibited by law from disclosing any non-public, personally identifiable information regarding any loan originated through our platform." 
 
 "All loans originated through the Prosper platform are subject to all identity verification and screening procedures required by law, including U.S. anti-terrorism and anti-money laundering laws," the spokesperson said. "Like all Americans, Prosper is shocked and saddened by recent events in San Bernardino." 
 
 And a senior law enforcement official told NBC News Tuesday that FBI investigators have been told that Farook discussed staging an attack in California as early as 2012. 
 
 The official said investigators don’t yet know what to make of the claim, although they say it may bolster their growing suspicion that Farook was radicalized long before he returned from Saudi Arabia last year with his wife. 
 
 The latest revelations come after NBC News reported Monday that federal investigators are interviewing a neighbor of Farook and Malik who bought two of the four guns that were used in the massacre. ||||| An examination of digital equipment recovered from the home of the couple who killed 14 people in San Bernardino last week has led FBI investigators to believe the shooters were planning an even larger assault, according to federal government sources. 
 
 Investigators on Thursday continued to search for digital footprints left by Syed Rizwan Farook and Tashfeen Malik, scouring a downtown San Bernardino lake for electronic items, including a hard drive that the couple was hoping to destroy, sources told The Times. 
 
 FBI agents will probably spend days searching Seccombe Lake and canvassing the neighborhood for clues after receiving a tip that the couple may have visited the area on the day of the attack, according to David Bowdich, assistant special agent in charge of the FBI's Los Angeles field office. 
 
 Farook and Malik were in the final planning stages of an assault on a location or building that housed a lot more people than the Inland Regional Center, possibly a nearby school or college, according to federal sources familiar with the widening investigation. 
 
 Luis Sinco / Los Angeles Times A memorial to victims of the terrorist attack in San Bernardino continues to grow near the Inland Regional Center. A memorial to victims of the terrorist attack in San Bernardino continues to grow near the Inland Regional Center. (Luis Sinco / Los Angeles Times) 
 
 Investigators have based that conclusion on evidence left behind on Farook and Malik's computers and digital devices, not all of which the couple were able to destroy before they were killed in a firefight with police, the sources said. 
 
 Images of San Bernardino-area schools were found on a cellphone belonging to Farook, according to a law enforcement source. But the source cautioned that Farook may have had a legitimate reason to have the images because his work as a county health inspector involved checking on school dining facilities. 
 
 On Thursday, one of the federal government sources told The Times that Farook asked his friend and neighbor, Enrique Marquez, to buy two military-style rifles used in the attacks because he feared he "wouldn't pass a background check" if he attempted to acquire the weapons on his own. The rifles were bought at a local gun store, the source said. 
 
 The timing of the rifle purchases is significant to FBI investigators. Another federal government source previously told The Times that Farook may have been considering a separate terror plot in 2011 or 2012. 
 
 Farook was self-radicalizing around that time, FBI Director James Comey said, and met Malik soon after, eventually escorting her to the United States. Farook was a practicing Muslim. Marquez converted to Islam around the time he purchased the weapons, sources have told The Times. 
 
 FBI agents believe Farook abandoned his plans to launch the earlier attack after a law enforcement task force arrested three men in Chino in November 2012. The men were later convicted of charges related to providing material support to terrorists and plotting to kill Americans in Afghanistan. A fourth man arrested in Afghanistan also was convicted in the scheme. 
 
 Bowdich said federal agents are investigating whether the men had ties to Farook. 
 
 Marquez has emerged as a central figure in the investigation. The FBI had been conducting interviews with 24-year-old, who checked himself into a mental health facility after the attacks. 
 
 The former Wal-Mart security guard has waived his Miranda rights and cooperated with the inquiry, and it was Marquez who told FBI agents about Farook's earlier plans, according to one of the government sources, who also requested anonymity. 
 
 (Rick Loomis / Los Angeles Times) 
 
 "They were talking generally about something, but I don't think it made it to anything specific," one of the sources said of the earlier plot. "I don't think it got to a time or a place." 
 
 The source said it remains unclear whether Marquez had any involvement in the planning of the shooting or had any prior knowledge that an attack was pending. 
 
 Marquez, a cycling enthusiast who wanted to join the U.S. Navy, was a longtime friend and neighbor of Farook. He also married the sister of Farook's sister-in-law last year, although the circumstances of the union are now under investigation, a government official previously told The Times. 
 
 There was no paperwork transferring ownership of the assault rifles from Marquez to Farook, as required by California law, government officials told The Times. 
 
 Hours after the shooting, Marquez posted a cryptic message on his Facebook page. 
 
 "I'm. Very sorry sguys," the message read. "It was a pleasure." 
 
 Bowdich on Thursday declined to answer questions about Marquez, who has not been charged with a crime. 
 
 Marquez told FBI agents that the Facebook post has been "misunderstood," according to one of the government sources. Agents are concerned that Marquez's mental and emotional state may affect what he has been telling interrogators, the source said. 
 
 While Marquez has spoken to agents about his ties to Farook, federal officials are still working to verify the information he has provided, the source said. 
 
 Marquez's mother, Armida Chacon, addressed reporters on Thursday from her Tomlinson Avenue home in Riverside, sobbing as she said she hadn't been in contact with her son since the day of the massacre. 
 
 "I don't know how this happened.... My world is upside-down," she said. "My life changed Wednesday." 
 
 Chacon was outside with one of her sons, cleaning up the broken glass and twisted panels of their garage door. The damage occurred when federal agents raided the stucco home over the weekend. 
 
 As she combed through the wreckage of the garage door, Chacon eventually turned to the reporters camped out on the street and agreed to an off-camera interview. 
 
 Marquez was his mother's "right hand at home," helping take care of his brothers, she said. 
 
 She said her son loved to hang out with friends and go to parties. 
 
 "My son is a good person," she said. 
 
 When asked about Farook, Chacon said her son was friends with him and "nothing more." ||||| (CNN) More than one week later, authorities are still digging to make sense of the San Bernardino massacre, piecing together the clues they've compiled so far and trying to discover more, including by investigating the shooters' electronic trail and searching a lake near where the carnage occurred. 
 
 The identity of the killers, Syed Rizwan Farook and Tashfeen Malik, is not in doubt. But investigators want to find out more about who this married couple interacted with, how they hatched and carried out the plot, and why. 
 
 These are the latest and most significant investigative leads so far: 
 
 Friday 
 
 Friend of killer says he helped build prior pipe bombs 
 
 Enrique Marquez, a former neighbor of Farook, told investigators he and his friend previously built pipe bombs, law enforcement officials said. 
 
 Marquez said he had nothing to do with devices found at the home of Farook and Malik, or the ones that apparently failed to go off at the site of the shooting, the officials said. 
 
 Marquez, who has spent several days being voluntarily interviewed by the FBI, portrayed the two men as hobbyists experimenting with building the devices, the officials told CNN. 
 
 He also boasted, one official said, that if he had made the bombs they would have gone off. 
 
 Marquez has emerged as a person of interest in the San Bernardino shootings because he bought rifles used in the attack. He has not been charged with a crime. 
 
 Divers search a small lake near where shooters had been, the FBI says 
 
 Divers ended Friday evening a second search of a small lake in a park a few miles from San Bernardino's Inland Regional Center, where 14 people were killed last week. 
 
 David Bowdich, the assistant director in charge of the FBI's Los Angeles office, wouldn't comment on what they were looking for. But he said Farook and Malik were in the area "at some point," without specifying if this was before or after the massacre. 
 
 One of the items divers likely are looking for is a missing hard drive from the couple's computer. 
 
 Bowdich has said the search will take several days. 
 
 Thursday 
 
 Farook was in the same 'social circle' as convicted terrorist, FBI believes 
 
 The FBI believes Farook had ties to a group of jihadists in California who were arrested in 2012 for attempting to travel to Afghanistan to join al Qaeda. 
 
 Specifically, investigators are taking a new look at one of the four men who was arrested in the 2012 case, Sohiel Kabir. Kabir, who was convicted and sentenced to 25 years in prison, was the recruiter who helped radicalize others. 
 
 The 2012 probe happened in Riverside, California, not far from San Bernardino. Farook was in the social circle of Kabir, officials told CNN. 
 
 The FBI initially investigated five men as part of the Riverside group. The fifth wasn't arrested and hasn't been identified. But Farook was not among those investigated at the time, the officials said. 
 
 Wednesday 
 
 Marquez says Farook considered terror plot in 2012 
 
 Marquez told investigators that he and Farook conceived a terror plot in 2012, but abandoned their plans after the FBI arrested an unrelated group in Riverside that had been planning to join al Qaeda in Afghanistan. 
 
 Marquez checked himself in to a mental health facility after the San Bernardino attack. 
 
 He is cooperating with the FBI, but investigators are still trying to corroborate the information he has provided, including details of the alleged 2012 plot. 
 
 Marquez claims he knew nothing about the San Bernardino shootings. He has not been charged with a crime. 
 
 That same friend's marriage -- to a woman of Russian descent -- is under scrutiny 
 
 Now that Farook's friend and former neighbor Enrique Marquez has the attention of investigators, his own relationships are being scrutinized. 
 
 Federal authorities are "examining the circumstances of the marriage" between Marquez and a woman of Russian descent, according to a source familiar with the matter. Investigators are looking into whether this was a sham marriage for immigration purposes. 
 
 The woman came to the United States from Russia on a J-1 visa in 2009, according to another law enforcement official. That official said the woman did not appear for an interview earlier this week for her permanent resident application. 
 
 The FBI has recovered some electronic communication from killers, officials say 
 
 Farook and Malik tried to destroy their electronic tracks, but the FBI has been able to recover some of those communications, two law enforcement officials told CNN. 
 
 FBI Director James Comey told a Senate hearing Wednesday the agency has found online discussions about jihad between Farook and Malik from late 2013, before they began dating. Investigators have found data on a tablet computer and other cell phones at the couple's home, he said. 
 
 The FBI is still trying to recover information from two smashed cell phones found in a garbage can near the home. They also have not found the hard drive from a computer at the home; investigators believe the hard drive was removed as a way to cover up the crime. 
 
 The shooters talked about jihad and martyrdom before marrying, FBI leader says 
 
 The online communications recovered so far indicate that the two killers had become radicalized long before carrying out last week's attack. 
 
 Comey elaborated a bit on the conversations between Farook and Malik, where they talked to each other about jihad and martyrdom before they were married and before Malik immigrated to the United States. 
 
 Asked if Malik was radicalized before she entered the United States, Comey replied: "So far, it looks like she was... she was before she connected with the other killer." 
 
 Tuesday 
 
 Authorities say Farook's friend, Marquez, bought weapons used in the rampage 
 
 The two AR-15s used in the San Bernardino attack were purchased by Enrique Marquez for Farook back in 2011 and 2012, two law enforcement officials said. Marquez acknowledged that he bought the weapons and soon after gave them to Farook, though he never reported the ownership transfer. Such transactions could be a violation of California law, the officials said. 
 
 Farook borrowed $28,500 via online lender Prosper last month 
 
 Farook took out a loan for $28,500 in November, multiple law enforcement officials told CNN. Investigators have accounted for all the money and do not believe any of the money was provided to the killers by any outside entity backing the plot, according to one of the sources. 
 
 Because of that, the officials said the loan, from the online lender Prosper, is not considered of significant investigative value at this stage. 
 
 About half was given to Farook's mother in the last couple of weeks, one official said and some was spent on household items. 
 
 It is believed the couple had bought the arsenal they used before the loan was taken out. 
 
 A representative for Prosper would not confirm the existence of the loan, but provided CNN the following statement: "Prosper is prohibited by law from disclosing any non-public, personally identifiable information regarding any loan originated through our platform. All loans originated through the Prosper platform are subject to all identity verification and screening procedures required by law, including US anti-terrorism and anti-money laundering laws. As part of our standard procedures, we also confirm that all loan funds are disbursed into a verified US bank account in the borrower's name. Like all Americans, Prosper is shocked and saddened by recent events in San Bernardino." 
 
 A man thought to be Farook went to a gun range -- alone -- days before the attack, a source says 
 
 A man believed to be Farook visited the Magnum Shooting Range in Riverside, California, alone on the Sunday and Monday prior to the December 2 attacks in San Bernardino, according to a source familiar with the matter. 
 
 He practiced shooting an AR-15. The source said sign-in logs at the range were paired with surveillance video that have been turned over to the FBI. The FBI was at the range Monday night asking questions and showing pictures of another male (not Farook), asking if that man had ever been to the range. 
 
 Last week 
 
 Officials: While the shooting was happening, Malik pledged allegiance to ISIS in a Facebook post 
 
 As the San Bernardino attack was happening, investigators believe Malik posted on Facebook pledging allegiance to ISIS leader Abu Bakr al-Baghdadi, three U.S. officials familiar with the investigation told CNN. 
 
 Malik posted the comment, but it was made on an account with a different name, one U.S. official said. The officials did not explain how they knew Malik made the post. 
 
 "There was a post that went up around 11 a.m. PT on the account Wednesday that violated the company's community standards (those standards prohibit people using Facebook to promote terrorism or celebrate/glorify violence)," a Facebook official told CNN. "It was taken down Thursday. He said he couldn't go into details about the nature of the post other than it violated standards (pointed to their standards prohibiting terrorism). The official said Facebook is cooperating with law enforcement." 
 
 Authorities think the couple met in 2013 in Saudi Arabia during the Hajj 
 
 Farook traveled to Saudi Arabia in 2013 for the Hajj for a couple of weeks, two government officials said. 
 
 One of the officials explained that this is a common occurrence and the trip would not have raised any red flags as many Americans travel to Saudi Arabia during that time. 
 
 The feds believe Farook met Malik during that trip. Malik eventually came to the United States on a fiancée visa, the official said. She then obtained a green card. ||||| San Bernardino, California (CNN) With the investigation still unfolding, much is unclear about Wednesday's deadly San Bernardino shooting at a center for people with developmental disabilities. 
 
 [Update 12:22 a.m ET Thursday] 
 
 The family has not been able to track down recently named suspect Syed Farook or his wife since Wednesday morning, said Hussam Ayloush, executive director of CAIR (the Council on American Islamic Relations). 
 
 Farhan Khan, the brother-in-law of the suspect Syed Farook, told reporters: "I have no idea why he would he do something like this. I have absolutely no idea. i am in shock myself." Khan said he last talked to Farook a week ago. 
 
 [Update midnight ET] 
 
 ATF tells CNN that one of the guns used in the shooting was legally purchased and traces back to someone believe to be connect with the shooting. The agency would not disclose the name of the purchaser. 
 
 [Update 11:56 p.m. ET Wednesday] 
 
 One of the suspects involved in the San Bernardino shootings has been identified as Syed Farook, an inspector with the county health department, who abruptly left the event at the Inland Regional Center before the shootings, multiple law enforcement sources tell CNN. 
 
 The sources said the residence in Redlands, California, surrounded by law enforcement is connected to Farook. It is that house where the chase began that led to the shootout with the occupants of the SUV. 
 
 The sources could not say for certain that he was in the SUV, if he was a shooter, or that he is one of the dead. The sources did say that Syed Farook is known to be a U.S. citizen. 
 
 [Previous story 11:56 ET] 
 
 Two suspects died in a gun battle with police Wednesday hours after authorities say they burst into a holiday party at a center for people with developmental disabilities and killed 14 people. 
 
 But it was unclear whether the furious shootout with the male and female suspects was the end of a daylong manhunt after the mass shooting at the Inland Regional Center in San Bernardino. 
 
 An FBI raid was unfolding late Wednesday at an apartment in Redlands, where authorities were serving a search warrant connected to the shooting. 
 
 Mass shooting 
 
 The violence began around 11 a.m. at the convention building at the Inland Regional Center where employees with the county health department were attending a holiday event. Witnesses said at least two shooters opened fire, killing 14 people. 
 
 Another 17 people were hurt -- many wounded by bullets from automatic-style rifles, some injured in the panic to escape. 
 
 The shooters fled in a black SUV, prompting a huge police response in the area. 
 
 As the hours passed, the hunt for the suspects continued with a tip taking officers to a home about 10 miles away in Redlands. 
 
 When detectives followed up on it, a black SUV with Utah plates passed by slowly then sped up and raced off, a law enforcement official close to the investigation told CNN. A police car spotted it and took up pursuit. 
 
 There was a shootout, the official said. The male suspect shot out of the vehicle while the woman drove. The SUV stopped a quarter a mile later, as an officer returned fire. 
 
 A device that looked like a bomb also flew out of the vehicle, Meredith Davis with the Bureau of Alcohol Tobacco and Firearms and Explosives told CNN affiliate KCAL/KCBS. The SUV was racing back toward San Bernardino, she said. 
 
 Photos: San Bernardino shooting Police officers stand guard as they investigate a suspicious vehicle in Redlands, California, on Wednesday, December 2, after a mass shooting in nearby San Bernardino in which 14 people died and 21 were injured. The shooting took place at the Inland Regional Center, where employees with the county health department were attending a holiday event. The two shooters -- Syed Rizwan Farook and his wife, Tashfeen Malik -- were fatally shot in a gun battle with police hours after the initial incident. Farook worked for the county health department. Hide Caption 1 of 29 Photos: San Bernardino shooting A police officer places a marker along East San Bernardino Avenue, near where the shootout occurred. Hide Caption 2 of 29 Photos: San Bernardino shooting Law enforcement officers search a residential area for suspects who fled after the shooting. Hide Caption 3 of 29 Photos: San Bernardino shooting Police search for the suspects in San Bernardino. Hide Caption 4 of 29 Photos: San Bernardino shooting The residential area was not far from where the shooting occurred. Hide Caption 5 of 29 Photos: San Bernardino shooting Law enforcement officers search a neighborhood in San Bernardino. Hide Caption 6 of 29 Photos: San Bernardino shooting A police officer loads his weapon while pursuing suspects. Hide Caption 7 of 29 Photos: San Bernardino shooting A SWAT team mobilizes during the search. Hide Caption 8 of 29 Photos: San Bernardino shooting People pray on the San Bernardino Golf Course, across the street from where the shooting took place. Hide Caption 9 of 29 Photos: San Bernardino shooting Heavily armed law enforcement officers swarmed the area where the shooting occurred. Hide Caption 10 of 29 Photos: San Bernardino shooting People leave a community center after reuniting with friends and family in the aftermath of the shootings. Hide Caption 11 of 29 Photos: San Bernardino shooting A woman is comforted near the scene of the shooting. Hide Caption 12 of 29 Photos: San Bernardino shooting A police helicopter hovers around the Inland Regional Center. Hide Caption 13 of 29 Photos: San Bernardino shooting Luis Gutierrez gets emotional as he talks about his wife who works in the facility and saw a gunman, according to Los Angeles Times photographer Marcus Yam. Hide Caption 14 of 29 Photos: San Bernardino shooting Two women speak with a firefighter at a triage area near the scene. Hide Caption 15 of 29 Photos: San Bernardino shooting Police stand guard outside of the emergency room at the Loma Linda University Medical Center, where some of the victims were being treated. Hide Caption 16 of 29 Photos: San Bernardino shooting Police escort civilians away from the site of the shooting. Hide Caption 17 of 29 Photos: San Bernardino shooting People walk away from the scene. It is unclear how many people were at the facility at the time of the shooting. Hide Caption 18 of 29 Photos: San Bernardino shooting Police in SWAT gear secure the area. Hide Caption 19 of 29 Photos: San Bernardino shooting Two women embrace at a community center where family members were gathering to pick up people from the scene. Hide Caption 20 of 29 Photos: San Bernardino shooting People gather at the San Bernardino Golf Course. Hide Caption 21 of 29 Photos: San Bernardino shooting People talk to police at the golf course. Hide Caption 22 of 29 Photos: San Bernardino shooting A woman is wheeled away on a stretcher. Hide Caption 23 of 29 Photos: San Bernardino shooting People are moved away from the area by bus. Hide Caption 24 of 29 Photos: San Bernardino shooting Police and fire personnel are seen near the site of the shooting. Hide Caption 25 of 29 Photos: San Bernardino shooting A crowd gathers behind the police line. Hide Caption 26 of 29 Photos: San Bernardino shooting Ambulances pull out of a staging area near the Inland Regional Center. Hide Caption 27 of 29 Photos: San Bernardino shooting A SWAT vehicle carries police officers. Hide Caption 28 of 29 Photos: San Bernardino shooting SWAT teams and a bomb squad were working to clear the buildings where the shootings took place. Hide Caption 29 of 29 
 
 Residents were stunned to hear the eruption of continuous gunfire. A barrage of bullets riddled the SUV's windshield. 
 
 A third person who was caught running near the scene was detained, but police aren't sure whether he was connected to either shooting. 
 
 The shooting occurred at the Inland Regional Center (1) in San Bernardino, California. Two suspects were shot and killed by police in a residential area (2) about two miles away hours after the initial incident. 
 
 Suspects dressed for assault 
 
 San Bernardino Police Chief Jarrod Burguan didn't say how old the suspects were or physically describe them in detail. He told reporters they were armed with assault-style rifles and handguns. 
 
 A law enforcement official told CNN the rifles were AR-15s or similar style weapons. 
 
 The man and the woman were dressed in what Burquan said was "assault-style clothing," describing it as "dark, kind of tactical gear." 
 
 He wouldn't say if he knew if they were related. 
 
 Witnessed text frightened messages 
 
 Hours after the shooting, the Inland Regional Center convention center was still an active scene. The bomb squad was working to determine whether they need to blow up two suspicious devices, one of which appeared to be a pipe bomb. 
 
 Coverage from CNN affiliates KTLA 
 
 KABC 
 
 KCAL/KCBS 
 
 Survivors of the mass shooting told of hiding in offices, bathrooms and closets, texting their loved ones that they feared they were next to be shot. 
 
 In the moments after the initial bloodbath, SWAT teams had scoured the facility, unsure whether the shooters were still there and looking for people hiding from the horror. 
 
 Marcos Aguilera received a text from his wife who works at the Inland Regional Center. 
 
 "She heard the shots and crying," he said. The situation became confusing when the fire alarm went off. 
 
 "Everyone was confused," he said, relating his wife's account. 
 
 A SWAT team eventually rescued his wife and two other co-workers. "When she exited the building, she said there were multiple bodies on the floor," Aguilera told CNN. 
 
 CNN Map 
 
 The center's executive director, Lavinia Johnson, told CNN that she believed the county's Department of Public Health was having a holiday party. 
 
 Johnson said the fire alarm went off in her building, and people began to evacuate but then the order came to stay in place. 
 
 Later police came and took people out of their offices, marching them into the parking lot with their hands in the air. 
 
 San Bernardino is a city of just over 200,000 people 60 miles east of Los Angeles.
– San Bernardino shooter Syed Rizwan Farook may have been planning mass murder even before he married accomplice Tashfeen Malik, according to sources close to the investigation. Officials tell CNN that Farook plotted to carry out an attack with somebody else in California in 2012, though it's not clear how far the preparations went. The plan was called off after a round of terror-related arrests in the area "spooked" Farook and his accomplice, one source says. Law enforcement officials tell NBC News that Farook and Malik appeared to have planned the San Bernardino attack for at least a year, training at local gun ranges and making financial arrangements for their 6-month-old daughter and Farook's mother. The FBI is still investigating a loan of $28,500 deposited into Farook's account two weeks before the attack, a loan that an investigator tells NBC "would be consistent with them making preparations for Grandma and the kid." In other developments: The Los Angeles Times reports that former Minneapolis resident Mohamed Abdullahi Hassan, an alleged ISIS recruiter who targeted Westerners on social media, has surrendered to authorities in Somalia. Investigators suspect he may have influenced Farook. The San Bernardino Department of Public Health, which employed Farook and most of the 14 people killed in the attack, trained employees last year for an active-shooter drill in the same room at the Inland Regional Center that Farook and Malik attacked, the AP reports. "Everyone was trying to be quiet and not draw attention to themselves as they were trained to do, to try to find as much protection as you can," an assistant director of the department says. "Unfortunately, the room just didn't provide a whole lot of protection." Law enforcement sources tell the Times that a device Farook and Malik left behind at the scene of the attack may have been designed to kill first responders. The sources say the crude device, which included three pipe bombs, was disabled by water from the building's sprinkler system. See a photo of the holiday party taken just before the shooting here.