A black security guard was shot dead by a police officer as he held down a suspect in a shooting at the bar where he worked.

Jemel Roberson, 26, was working early Sunday at Mannys Blue Room a bar in the predominantly black Chicago suburb of Robbins, Illinois when a patron who was part of a drunken group that had been kicked out returned with a gun at 4 a.m. and opened fire, according to the Chicago Sun-Times . Several people were shot.

Roberson, who was armed at the time, grabbed one of the men, held him down and waited for police, according to witnesses.

He had somebody on the ground with his knee in back, with his gun in his back like, Dont move, Adam Harris told WGN-TV .

But witnesses said Roberson became the victim as soon as police arrived. A responding officer with the Midlothian Police Department immediately shot Roberson, who later died at a hospital.