Man, 21, fatally shot in Archer Heights

A 21-year-old man was fatally shot Friday evening in the Archer Heights neighborhood on the Southwest Side, authorities said.

Officers responded to a call of shots fired at 6:48 p.m. in the 4900 block of South Kostner and learned Carlos Rosas had already taken himself to Mount Sinai Hospital, Chicago Police and the Cook County medical examiner’s office said.

He was shot in his chest and neck and was pronounced dead at 7:12 p.m., authorities said. He lived a few blocks from the scene of the shooting.

Area Central detectives were conducting a homicide investigation.