Four Chicago police officers were injured, three critically, in a crash while pursuing suspects wanted for a shooting outside a police station in Woodlawn on Saturday.

Someone fired shots from a black Jeep about 3:30 p.m., striking a 24-year-old man in his thigh and grazing a 28-year-old woman’s buttocks, outside the Grand Cross District police station, Chicago police said in a statement.

Witnesses said the Jeep then sped away, but returned to the station where responding officers in a police SUV spotted the vehicle and began a pursuit. The two vehicles collided a short time later.

Four police officers had to be extricated from their vehicles, according to police. Fire officials said two officers were taken to the University of Chicago Medical Center in critical condition, a third officer was taken to Stroger Hospital in critical condition, and a fourth officer self-transported to a local hospital in an unknown condition, Fox 32 reports.