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Video shows scene around time Joseph Pappas was located, shot himself

Video shows scene around time Joseph Pappas was located, shot himself

Pappas, 62, planned Dr. Mark Hausknecht's killing - apparently over his mother's death - and last month followed the doctor as he rode his bicycle to work at Houston Methodist Hospital, according to authorities.

Officials believe his fascination of and attack on the cardiologist stems from a grudge Pappas had been holding onto for more than 20 years - Hausknecht operated on his mother in 1997, but she died during surgery. Responding officers arrived in the area shortly after and were able to pinpoint Pappas' location, closing in on him around 9:30 a.m.

The chief said the officers demanded Pappas reveal his right hand, but the suspect refused until pulling the gun out and drawing it on himself.

Acevedo said there's other evidence that leads them to believe Pappas is the shooter, but did not provide additional details.

"The suspect said something about suicide, and the officer said, "Let me see some hands" or something of that nature", Acevedo recalled.

Acevedo said detectives found an extensive intelligence file about Hausknecht and a hit list including other names inside the suspect's home.

The suicide brought to a conclusion a massive manhunt for Pappas, a former police officer who was well trained in the use of firearms and said to be an excellent marksman.

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"The potential threat to the city from an accused murderer considered armed and risky is now over, closing another chapter of this horrific tragedy". 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.

"I am thankful today for quite a few things, No. 1 that we will end this week with a great sense of relief in the City of Houston, the Texas Medical Center", the chief said.

Police said he took law enforcement classes through August of past year and was a highly skilled shooter.

According to the chief, a city parks board employee who'd been checking for graffiti in the area near the Jewish Community Center came across a man in the area not far from Pappas's home in Westbury and approached him. He had been in Texas law enforcement for 30 years, until retiring in 2013, according to NBC News. Pappas had been following the physician.

Friends and family have described Hausknecht as a humble and generous man who was adored by his patients, volunteered in his community and cared about the environment.

"The family can never adequately thank our friends and neighbors who have loved and supported us".