Update Sat. 6:45 p.m.
The man taken into custody following the shooting is Sean Williams, 19, of 27 Neputune Ave.
Det. Sgt. Lee Young said Williams is being held on a charge of second-degree criminal trespass. His possible involvement in the shooting is still being investigated, Young said.
Williams was found hiding in the basement of a store on Woodward Avenue, Young said.
The victim's gunshot wound is not life threatening and "he's going to live," Young said.
A man was shot in the back Saturday afternoon in the area of 50 Woodward Ave. in South Norwalk.
The shooting was reported at 2:14 p.m. Police broadcasts indicated the victim has a life-threatening injury. He was transported by ambulance to Norwalk Hospital, where a trauma alert was issued in the Emergency Department.
Less than 20 minutes after the shooting was reported, police took a man into custody as the alleged shooter.
Police broadcasts indicated at .38-caliber revolver was used by the shooter.
Police located at least one eyewitness to the shooting, according to police broadcasts.