Chicago firefighters rescued a 17-year-old boy who fell about 40 feet down an air shaft early Friday, authorities said.
The teen initially was taken to a hospital in serious-to-critical condition following the rescue that took two hours, Deputy District Fire Chief Dennis Carbonneau said. Police said the teen suffered minor injuries.
The teen was with friends on a rooftop in the Old Town neighborhood on Chicago's North Side when he fell about 4 a.m. down the shaft between two buildings, police said.
Two firefighters were lowered using a rope-rescue system to reach the teen, Carbonneau said.