Emergency crews rescued a male worker who was trapped in a confined space on a crane barge in East Boston on Friday morning.
The emergency was reported around 8:45 a.m. in the area of 360 Border St., according to emergency officials. The worker was stuck in the 10-foot by 30-foot barge with a lack of oxygen for 10 to 12 minutes.
His coworkers called 911 when he failed to respond.
The worker was semi-conscious when he was transported to an area hospital, according to fire officials. His current condition is not known.
The Occupational Safety and Health Administration is now taking over the investigation.