Two men were injured and one remained missing Saturday night after two separate boating incidents in Anne Arundel County.

Passersby picked up two men whose boat had overturned near Thomas Point shortly before 5:30 p.m. Saturday, said Sgt. Brian Albert, a spokesman for the Department of Natural Resources Police.

The two men, ages 32 and 39, were taken to a nearby U.S. Coast Guard station, he said.

The older man was flown to Maryland Shock Trauma Center with life-threatening injuries. The younger man, whose condition was not known Saturday night, was driven to the same hospital, Albert said. He did not have any information about why the boat overturned.

Police are also searching for a man who jumped from a boat into Stony Creek near Riveria Beach in Anne Arundel County, he said.

The man disappeared around 5:00 p.m., Albert said, when he dove into the water and people nearby did not see him resurface.

steve.kilar@baltsun.com