St. Louis County officer fatally shoots murder suspect after he killed a driver at a gas station

The video, begins with a satellite view of a QuikTrip convenience store and the surrounding area in the 10700 block of West Florissant Avenue. Police said that's where a Ferguson police officer fatally shot Joshua Campbell after Campbell fatally shot the driver of a vehicle he was riding in.

“At approximately 1:33 a.m. (on April 16), two men traveling together in a white Ford Escape arrived at (the) convenience store…. The driver, who is also the victim in this case, entered the store to make a purchase,” Cunningham said.

At about the same time, the officer parked his patrol SUV in front of the store.

Subsequent surveillance video showed both men inside the store making purchases and returning to their vehicles several minutes later. The driver of the Escape, identified as Detarius Haynes, 26, drove toward the gas pumps before stopping.

As the officer was walking to his SUV, he heard gunfire. He placed his purchased items on the hood of his vehicle and ran toward the Escape.

“The officer heard additional gunfire and observed a victim fall from the driver’s seat. An armed suspect climbed out of the vehicle from the driver’s door,” Cunningham said.

Slowed video from the officer's body camera showed him running toward the Escape with his service weapon drawn. Haynes' body, while blurred, is visible on the ground.

The officer gave the suspect “verbal commands,” which he ignored. The officer then fired his gun, striking Campbell. Campbell, 18, ran toward West Florissant Avenue before he collapsed, police said.

About 25 seconds after the incident first started, the officer radioed to dispatchers that shots were fired, and the suspect was down.

Cunningham said a 9mm pistol belonging to Campbell and 10 shell casings were recovered at the scene.