This timeline illustrates how police worked tirelessly to identify and locate Dr. Mark Hausknecht's killer. Hausknecht was murdered by Joseph Pappas while riding his bike to work in the Texas Medical Center. The shocking murder case of Dr. Mark Hausknecht came to a dramatic end Friday when his killer took his own life after police confronted him. Here's a timeline of the case that had a city on edge for more than two weeks: July 20: Dr. Mark Hausknecht was headed to Methodist Hospital on his bike when Pappas shot him three times. Pappas was also on a bicycle and immediately fled the scene as Hausknecht flagged down a passing ambulance for help. He died at the hospital. Hausknecht, who saved countless lives as a cardiologist, once treated President George H.W. Bush. Statement by President @GeorgeHWBush on the tragic death of Houston cardiologist Dr. Mark Hausknecht. pic.twitter.com/Wl0g6IK3c5 — Jim McGrath (@jgm41) July 20, 2018 July 21: The Houston Police Department released a composite sketch of the suspect wanted for shooting and killing Hausknecht. UPDATE #2: Composite sketch just completed of the suspect wanted in yesterday's killing of Dr. Hausknecht at 6600 Main. Suspect description remains same. If you recognize this male, call HPD Homicide 713-308-3600 or @CrimeStopHOU 713-222-TIPS. CS reward up to $5,000. #hounews pic.twitter.com/gQII98t7Ek — Houston Police (@houstonpolice) July 21, 2018 July 22: Police released surveillance photos in hopes of catching the killer. The photos showed the moments leading up to Hausknecht’s killing. The photos showed a "fit man" on a blue bike with an olive green backpack. This 4th (and last) photo is moments after the shooting as the suspect heads west on Southgate Blvd toward Travis St. These are the only images available for release at this time. Media partners: No other information, but we will provide any & all updates here. #hounews pic.twitter.com/l13zovmcNT — Houston Police (@houstonpolice) July 23, 2018 UPDATE#3: Road traveled: These still photos show Dr. Hausknecht (in green) & the suspect (in red). The Dr. is headed north at 6700 Main & crossing into the W Holcombe Blvd intersect. 2nd & 3rd photos are suspect behind the Dr. The shooting happened moments later, one block away. pic.twitter.com/d56PDIu4Ah — Houston Police (@houstonpolice) July 23, 2018 July 23: Houston police release new video that shows the man who gunned down Hausknecht. The video came from a Metro Lift bus and shows Hausknecht and Pappas riding their bikes on Main Street. Pappas was riding behind the doctor but passed him, turned around and shot him three times. The whole thing was captured on the surveillance video. This is surveillance video from a Metro Lift bus traveling southbound on Main. The doctor and suspect are traveling northbound on Main. No other information at this time. Call HPD Homicide or @CrimeStopHOU if you can ID the suspect. All updates will be posted here. pic.twitter.com/eNwbA4zql6 — Houston Police (@houstonpolice) July 23, 2018 July 25: Hausknecht’s autopsy revealed he was shot in the head, torso and upper left extremity. His death was ruled a homicide. July 28: Dr. Hausknecht was laid to rest one week after his murder. His funeral service was held at Houston’s First Presbyterian Church on Main Street. Pappas has still not been identified or found. July 30: Houston police released more video that shows Pappas riding his bike in a neighborhood moments after the deadly shooting. Aug. 1: The Houston Police Department held a press conference and identified Pappas as a suspect for the murder of Hausknecht. Police also released a photo of him. Chief Acevedo said Pappas is the son of a woman who was treated by Hausknecht. She died during surgery more than 20 years ago. UPDATE #9: Joseph James Pappas, 65, is charged with murdering Dr. Mark Hausknecht. Pappas is considered to be armed and extremely dangerous. If you see him call 9–1-1. #HouNews pic.twitter.com/m9QhDL2i0V — Houston Police (@houstonpolice) August 1, 2018 READ: Suspect in Houston cardiologist's murder is former law enforcement officer After police identified Pappas as the murder suspect KHOU 11 News found out he was a deputy constable for Harris County Precinct 2 and Precinct 7 back in the 1980s. Aug. 2: Dr. Hausknecht family releases a statement asking the public to focus on the photo of Pappas and help police locate him. The Houston Police Department also searched Pappas home after someone reported seeing him in the area. HPD Chief Slinkard provides information on search of suspect Pappa’s home on Stillbrooke https://t.co/shIkpqWkYv— Houston Police (@houstonpolice) August 3, 2018 In a chilling interview , a former friend of Pappas told KHOU 11 he believed the killer had a hit list and may be hunting for his next victim. Aug. 3: Joseph Pappas kills himself when he is confronted by two cops. Pappas was wearing body armor with hidden holsters during the time of the shooting and Acevedo believes there could have been a shootout if a second officer hadn't arrived in the nick of time. HPD @artacevedo provides update on search for suspect Pappa’s https://t.co/8JVx546gEd — Houston Police (@houstonpolice) August 3, 2018<doc-sep>HOUSTON, Texas (KTRK) -- The tragic murder of Dr. Mark Hausknecht and the manhunt that followed took a toll on many parts of the community, including the Texas Medical Center.People who work in the area say they feel safer knowing the suspect, Joseph Pappas, is no longer a threat. He died this morning after shooting himself in the head, according to police.Yet, many mysteries remain, like the document listing two dozen other doctors. Investigators reported they found the list alongside piles of information Pappas collected about Dr. Hausknecht.It's unclear if Pappas had other potential targets. The document had no further details.People are also wondering where Pappas spent the last two weeks after the murder. His life ended near his home, and some neighbors expected him to be on the run far away by now.Authorities released surveillance videos and images that appear to show Pappas near the murder scene, but they haven't released the video from a METRO bus showing the actual shooting.Many say it's something Hausknecht's friends, coworkers and family members should never have to watch.<doc-sep>Hausknecht was struck three times in the deadly shooting, twice in the torso and once in the head, as he bicycled through southwest Houston last month. Police said Pappas, who was also on at bike at the time, was following the doctor and then passed him before turning around and opening fire.<doc-sep>EMBED >More News Videos Houston police chief on suicide of murder suspect A body believed to be of the man accused of killing a Houston doctor has been found. Here’s the massive scene in southwest Houston. We’re expecting an update from @houstonpolice shortly. The latest here: https://t.co/h43ePdsyfp pic.twitter.com/Ehekw8GFmQ — Nick Natario (@NickABC13) August 3, 2018 EMBED >More News Videos Man found dead in southwest Houston EMBED >More News Videos Houston police give update after SWAT officers search neighborhood following reported sighting of murder suspect Joseph Pappas. EMBED >More News Videos Manhunt leads to false alarm search at murder suspect's home EMBED >More News Videos A SWAT team has been called to the home of Joseph James Pappas after police received some kind of tip. EMBED >More News Videos ABC13's Marla Carter says lights can be seen inside the home of Joseph James Pappas. EMBED >More News Videos Manhunt continues for the suspect in the murder of prominent doctor EMBED >More News Videos Joseph Pappas: What we know about Dr. Mark Hausknecht's suspected killer HOUSTON, Texas (KTRK) -- The wife of Dr. Mark Hausknecht is speaking just hours after the suspect in his murder died of an apparent suicide.Dr. Georgia R. Hsieh released a statement Friday evening after a two-week search for the man who gunned down her husband as he rode his bike to work in the Texas Medical Center.The statement reads:The suspect in the murder of a prominent Houston doctor had stalked the victim at least five times since early last month, leading ultimately to the deadly shooting in the Texas Medical Center, sources told Eyewitness News.The new detail comes on the heels of Joseph James Pappas' apparent suicide Friday morning in southwest Houston. He was the subject of a manhunt in the July 20 killing of Dr. Mark Hausknecht, who was shot to death while biking on his way to work.According to sources, surveillance cameras captured the suspect following Hausknecht's moves.Pappas' body was found in a grassy area along Bob White Drive near S. Braeswood Boulevard.Houston police Chief Art Acevedo said Pappas was sitting near Brays Bayou when a Houston Parks Board employee made contact with him. The worker spotted Pappas near the Seven Acres Jewish senior care center and thought he was a graffiti vandal.When approached, Pappas put his arms out and walked away. The worker then found Pappas' wallet, confirming his identity and called 911.Acevedo said when an officer arrived, Pappas had body armor on and a gun in his hand. He didn't comply with the officer's demands, and as a second officer arrived, Pappas killed himself with a single shot in the head.The shooting took place in the 8800 block of Bob White Drive, in the yard of an elderly couple.Mayor Sylvester Turner issued a statement: "The potential threat to the city from an accused murderer considered armed and dangerous is now over, closing another chapter of this horrific tragedy. And once again it involved heroic acts by frontline officers of the Houston Police Department, which has my gratitude for how it has handled this case and so many others. But they could not have succeeded in this case without information and support from members of the public. I encourage everyone who has information about pending and future cases to come forward and help our city save lives. "Acevedo added that in a search of Pappas' home this week, investigators found an extensive intelligence file on Dr. Mark Hausknecht.Overnight, a potential sighting near Pappas' Westbury home sparked an intense search late Thursday as police set up a perimeter in hopes of catching the suspect. After hours of searching, officers deemed the sighting a false alarm. "We're always careful but especially with a suspect who has an active murder warrant and we have learned is skilled with firearms and training," said HPD Exec. Assistant Chief Matt Slinkard. "We are going to take our time and be methodical. We have some of the best-trained SWAT in the nation. "Acevedo confirmed Friday to Foti Kallergis that Pappas has not used his passport. Acevedo added that there is no indication that Pappas has left the country.Pappas was a trained officer with 30 years of experience and a highly skilled shooter. Police had asked for everyone to continue to keep a look out for Pappas, but to consider him armed and dangerous.Houston police say a neighbor called the Harris County Precinct 5 Constables' Office Thursday to report the sighting, spurring a frenzy of police activity outside the murder suspect's home on Stillbrooke.HPD Executive Assistant Chief Matt Slinkard said deputy constables believed the suspect may have returned to his home after a light was seen shining inside the residence.An open gate also sparked concern the suspect may have tried to gain reentry to the home one day after it was searched by police.Neighbors were informed by authorities of the situation before SWAT officers and K-9 units were used to systematically search for the alleged killer.The Houston Police Department said the house was cleared just after midnight Friday, and that their search for the ex-deputy constable continues.Pappas was a skilled marksman, and investigators said he held a grudge for more than 20 years against the doctor over his mother's death. She died on Dr. Hausknecht's operating table.<doc-sep>
HOUSTON, Texas (KTRK) -- The shooting and hunt for the killer of Dr. Mark Hausknecht has spanned two weeks, and Eyewitness News is learning more details through charging documents.The suspect appeared to be waiting for Dr. Hausknecht to ride past his position before immediately following him. He then shot the doctor without provocation, and then fled the scene.Authorities learned Joe Pappas was considering suicide after a family friend told them.Pappas' friend, Sarah Parris, said she was visiting from Georgia and contacted him to see if they could get together.Parris said she got a text message from him stating that he was going to kill himself.Charging documents show the officer who searched Pappas' home "observed a large piece of metal positioned in such a way that it appears it was intended to be used to buttress the front door against any attempt to force entry into the residence. "It appears Pappas was ready for a shootout.That never happened.Houston police Chief Art Acevedo said Pappas was sitting near Brays Bayou when a Houston Parks Board employee made contact with him. The worker spotted Pappas near the Seven Acres Jewish Senior Care center and thought he was a graffiti vandal.When approached, Pappas put his arms out and walked away. The worker then found Pappas' wallet, confirming his identity and called 911.Acevedo said when an officer arrived, Pappas had body armor on and a gun in his hand. He didn't comply with the officer's demands, and as a second officer arrived, Pappas killed himself with a single shot in the head.