“He had somebody on the ground with his knee in back, with his gun in his back like, ‘Don’t move,’” witness Adam Harris told WGN-TV.

What happened next is still being debated between the Illinois State Police, witnesses and Roberson’s friends and family.

A responding Midlothian police officer shot Roberson, 26, who later died at a hospital. On Tuesday state police, tasked with independently investigating the shooting by the officer, stated in a press release that Roberson didn’t identify himself as a security guard and ignored the officer’s demands to drop his gun: