In the video, you can see the victim sitting in a black sedan parked at a gas pump on Westheimer near Eldridge Parkway around 11:20 pm.
An older vehicle can be seen pulling up behind him and someone in a black hoodie gets out, raises a gun, and shoots several times into the car.
"No interaction. He gets out of the car from the driver's seat, briskly walks up to the driver's side of the car, and starts shooting," Lt. Ronnie Wilkins said. "All the way from the passenger door to the front door."
Someone in a white hoodie can be seen standing at the passenger door watching. Then they drive away.
The victim's aunt said the family is devastated and that the victim was a 23-year-old father of two.
"It don’t make no sense. We’re asking (you to) turn yourself in," said Wanda Webb, the victim's aunt. "You know what you did. You gunned him down like he was a dog. My nephew has two kids and they’re young. Why did they do him like that? He didn’t deserve the way they gunned him down."
She said the family is anxious for the killer to be caught.
"Turn yourself in. You know what you did," Webb said. "You gunned him down like he was a dog."
Police said witnesses told them exactly what happened. Three cars appeared to be involved.
Just before 11:30 p.m., the victim parked at the gas pump in his black sedan at a gas station on Westheimer Road near Highway 6 in west Houston.
Police said another car pulled up right behind him, possibly an older boxy sedan from the 80s.
“Driver gets out, he’s wearing a black hoodie. You can’t see his face," HPD Lt. Wilkins said. "He runs up. He starts putting rounds into the car, the black vehicle behind me. He goes back to his car and takes off.”
Investigators said there was another man in a white car there too. He got out to watch the shooting and then took off when it was over, they said.
Police said they know what vehicle they are looking for. They started canvassing the area just after the shooting.
Anyone with information about the shooting is asked to call HPD at 713-837-0311.