Leonard Anderson was fatally shot in the South Shore neighborhood Thursday afternoon.
Anderson, 17, was sitting with a friend on the rear steps of a building in the 7000 block of South Stony Island Avenue about 6:25 p.m. Thursday, authorities said.
He walked into the alley, and an unknown person fired from the north end shot him in the right thigh and lower back, police said.
Anderson, of the 7200 block of South Bennett Avenue, was pronounced dead at Northwestern Memorial Hospital at 8:33 p.m., according to the Cook County Medical Examiner’s office.
No one was in custody Friday morning as Area South detectives investigated.
—Sun-Times Media Wire