Shots were fired at Chicago police in the Roseland neighborhood overnight.
It happened near 113th Street and Normal avenue around 12:50 a.m. Thursday.
Police said the officers were responding to a 911 call about a man with a gun, when several shots were fired at them.
The officers shot back. No injuries have been reported, and no suspects are in custody.
It is the fourth time since Sunday morning that Chicago police have been fired upon, or fired at suspects.