LYONS, Ill. (AP) — Authorities say an officer accidentally fired his handgun during a struggle while police were making arrests in suburban Chicago, wounding two other officers.

Police say Chicago officers spotted a car Wednesday night that was tied to homicide and a police helicopter tracked it to a gas station in Lyons. Chicago Police Superintendent David Brown says that when people from the car came out of the gas station officers surrounded them and a struggle ensued. Brown says they believe one bullet struck two officers — one in an arm and one in a shoulder. Police say the officers were taken to a hospital and their injuries weren’t considered life-threatening.