SOUTH PORTLAND — The driver of a motorcycle involved in a crash on Johnson Road near the Portland Jetport Wednesday afternoon has died.

Scott McDonald, 55 of South Portland, was riding his white Harley-Davidson motorcycle on Johnson Road inbound when a car pulled in front of him to make a U-turn  at 1:20 p.m., police said.

William Lyons, 83, of South Portland was driving a Toyota Avalon, also inbound, when he apparently tried to make a U-turn in front of the motorcycle near City Line Drive, police said.

The motorcycle hit the front left of the car and McDonald was thrown from the motorcycle. He was not wearing a helmet, police said.

McDonald was taken to Maine Medical Center with head injuries where he died on Thursday.

The crash remains under investigation and no charges have been filed.