Not only are they looking at surveillance video - which has not been released - but are also speaking to witnesses about what happened.
Family members have now identified the man shot and killed by police as 32-year-old David Thomas Jones of Germantown.
Family members were not yet ready for an on-camera interview on Friday. Off-camera, however, they said while they know Jones was no angel, he did not deserve to be shot in the back and they will not rest "until the truth comes out."
The incident happened around 6:45 p.m. Thursday on the 4100 block of Whitaker Avenue.
Police say it began as the officer was transporting individuals to the Special Victims Unit.
While stopped at a red light at Whitaker and Hunting Park avenues, police say the officer saw a man, identified as Jones, recklessly driving a red dirt bike.
When he saw the dirt bike stall on the sidewalk, the officer got out of the car and tried to question Jones.
Police say Jones then turned away from the officer and began holding the front of his waistband. According to police, the officer performed a pat down and felt a gun in his waistband.
The officer drew his weapon and, police say, repeatedly told Jones not to touch his gun.
There was a struggle, police say, and Jones pulled the gun from his waistband.
Police say the officer squeezed the trigger of his service weapon, but it did not fire.
Investigators go on to say the officer cleared the stoppage, then fired at Jones as he ran south on Whitaker Avenue.
Jones was hit in the back and buttocks. He was rushed to the hospital where he was pronounced dead at 6:59 p.m.
Police say Jones' gun was loaded with 15 bullets.
Commissioner Ross said department policy allows officers to shoot a fleeing suspect.
There is surveillance video of the incident, but it has not been released. Ross warns the video could be taken out of context, and many not show if the male was threatening to fire while he was running away.
Video from the Action Cam at the scene showed a gun just a feet away from the dirt bike the suspect was riding.
Meantime, the biker's family members are searching for answers.
A woman who said she was the male's grandmother spoke with Action News at the scene Thursday evening.
"He didn't bother nobody," she said.
Another person could be heard saying "You all know you are wrong! You know it!"
The officer has been placed on administrative leave in accordance with standard procedure as the investigation into the incident unfolds.
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