Bridgmon was killed on April 5 around 2:15 p.m. at Daleway Park, which the retired man enjoyed going to often, according to his family.
Around the time of his death, Bridgmon was in his vehicle when an altercation involving four teenagers took place.
At some point, the altercation apparently escalated into a shooting, and Bridgmon was struck by gunfire.
Officers found him in the driver's seat of his vehicle deceased from his injuries.
The shooting also resulted in the temporary lockdown of the nearby Cedar Park Christian School.
Two of the four teenagers have been identified and contacted, and the other two were seen fleeing the scene in a black sedan.
"They were obviously afraid, they ran when those shots were fired. We were able to contact them," said Lynnwood Police Department Public Affairs and Communications Manager Joanna Small.
Small said Bridgmon was in his vehicle when he was shot and did not intervene in the argument, when it broke out.
"He was enjoying his neighborhood, he was at a place where he obviously feels safe, doing something that he enjoys doing. I mean, it's tragic," Small said.
LPD said officers have identified, found and talked to numerous witnesses during their investigation to track down the suspect responsible for “this heinous crime.”
However, detectives said Tuesday that they believe there is an additional witness with important information who has not yet come forward.
LPD is also asking residents who live in the area of Daleway Park to check their surveillance cameras for images of a black sedan on April 5 from 1:30 to 2:30 p.m.
"What we're really hoping is people will check their surveillance footage, see if anything resembles a black sedan," Small said.
Those with information or video capturing the sedan or events around Bridgmon’s death should call Detective Jackie Arnett at 425-670-5669 or email email@example.com.