A Baton Rouge Fire Department truck was struck Friday night by a rock, a BB or fire from pellet gun, and Baton Rouge police are looking for the culprit.

The incident occurred about 8:45 p.m. at 4000 Evangeline Street when firefighters responded to a first aid call, police Lt. Joseph Colar said.

Something hit the back right window, but nobody was injured, Colar said.

The investigation is ongoing.