A man was shot and killed by two Los Angeles police ficers Saturday (October 3) after they had been briefed on a social media video that showed a man with a gun following police ficers, the Los Angeles Times reports.

The video shows a man sitting in a car with a gun in his lap parked behind a police cruiser. After an investigation, the police announced Tuesday (October 6) that the video was a publicity stunt made by a 1990s Rap group trying to make a comeback. Officials declined to name the group. The man holding the gun in the video has been identified and police have obtained a warrant for his arrest. Another man involved in the video has been arrested for an unrelated crime.

The man who was killed reportedly threw a 40-ounce beer bottle through the back window the police cruiser the two ficers were sitting in. The ficers thought they were being shot at, got out the car and opened fire on the individual, killing him.

There was no weapon found in the man’s possession.

Gary Fullerton, the lawyer representing the police department, defended the ficers’ actions.

“Officers feel very, very vulnerable out there right now,” he says. “They feel that at any moment somebody could attack them. The ficers feel terrible because they were 100 percent convinced that the guy was shooting at them.”

Fullerton says the ficers were briefed on the video at least two times, including once on the day the shooting.

Police Chief Charlie Beck told the Associated Press that he was not sure if the video caused the ficers to react the way they did, but says their fear for their lives is understandable.

“Anybody that has any empathy whatsoever can certainly see where this set circumstances would cause great concern,” he says. “You’re seated in your car, you’re aware that there are threats outstanding against police ficers, and the rear window explodes.”