Authorities in southwest Iowa’s Pottawattamie County have released more details where one police officer shot another. Carter Lake Police Chief Shawn Kannedy reportedly fired a gun inside the police department Wednesday afternoon. The bullet hit Sergeant Dan Driver in the lower torso, beneath his bullet-proof vest.

Driver was put in a police cruiser and taken to an Omaha Hospital following the 2:45 p.m. shooting. He is expected to recover. In a press release, city officials said Kannedy, Driver, and a third officer had been discussing firearms, when the chief accidentally discharged one round from his weapon.

The Pottawattamie County Sheriff’s Office is investigating the incident. Sheriff Jeff Danker says the gun may have malfunctioned, but many details about the shooting remained unclear late Wednesday afternoon. Kannedy — who has declined to comment on the matter — has been placed on administrative leave.