“It’s very difficult to watch,” Police Chief Chuck Jordan said at a news conference Monday. “The first time I watched it, I watched it with the family. … We will do the right thing, we will not cover anything up.”

Jordan said investigators never found a weapon on Terence Crutcher or in his vehicle after the 40-year-old was shot and killed Friday as he stood beside his stalled SUV. Crutcher died in a hospital later that evening.

U.S. Attorney Danny Williams announced that the Justice Department has opened an independent investigation into the fatal shooting.

The footage from Tulsa is the latest in a series of controversial videos showing white police officers fatally shooting unarmed black men, and promises to add a new chapter to an already bitter and divisive debate about race and policing in America.