Police responded to reports of a man with a gun and a ShotSpotter alert of gunfire shortly after 5 p.m. near the intersection of West Nevin Avenue and B Street, near the Richmond Parkway, Lt. Bisa French said.
Officers found the armed man and ended up firing at and wounding him.
He was taken to a hospital in critical condition with injuries that could be life-threatening, French said.
French did not yet known whether the man had fired his gun at the officers.