Stonington — A motorcyclist was thrown from his vehicle Sunday afternoon on Interstate 95 south near Exit 91 when he attempted to pass a vehicle at a high rate of speed from the right to the left lane, but instead hit the car's rear bumper, police said.

Mario Alexis Jr., 24, of 156 Garfield Ave., New London, was driving a 2002 Suzuki GSX 600 F at a high rate of speed, weaving in an out of traffic, when he unsuccessfully attempted to pass a car driven by Michael Greb, 62, of Amity Harbor, N.Y.

Police said he was thrown from the motorcycle and came to an uncontrolled rest in the right lane. A Life Star helicopter was summoned to the scene and took Alexis to Rhode Island Hospital in Providence. His condition was not available this morning.

The police report did not say whether Alexis was wearing any protection gear.

The accident was reported shortly before 2 p.m. The highway was closed for three hours as the state police Collision Analysis and Reconstruction Squad investigated the accident.