OMAHA, Neb. (AP) — Omaha’s police chief says officers are taking the death of a “Cops” TV show crew member very hard.

Police officers who opened fire while disrupting a robbery at a fast-food restaurant Tuesday night killed sound man Bryce Dion as well as the robbery suspect, who was carrying what officers thought was a real handgun. It turned out that the gun fires only plastic pellets.

The other man who was killed has been identified as parolee Cortez Washington.

Dion was wearing a bullet-proof vest but Police Chief Todd Schmaderer says a single bullet “slipped into a gap in the vest” and struck him in the chest. A full video of what happened isn’t being released but will be part of a grand jury investigation.

The crew for the reality show has been filming all summer in Omaha and had only one week left in the city.