BALDWIN, Maine — A 56-year-old Baldwin man died after the snowmobile he was riding left an unplowed roadway and struck a tree, an official with the Maine Warden Service said Sunday night.

Bradley Flint had gone out for a quick snowmobile ride on Saturday night, and when his son realized he was overdue, he called his uncle, who found Flint on Sunday morning along Marston Road. That road is not maintained in winter and is used by local snowmobile riders, said Sgt. Jason Luce of the Maine Warden Service.

“He’d been dead for while,” Luce said.

According to Luce, Flint was not wearing a helmet when the crash occurred. Flint suffered blunt trauma injuries, including to his head, but the cause of his death will be determined by an autopsy, he said.

Luce said that speed appears to be a factor in the crash, which remains under investigation by the Maine Warden Service.

Flint’s death is the third involving a snowmobile this year.

On Jan. 24, Robert Milhomme, 61, of Saint George died from head injuries he suffered in a crash that occurred on a plowed private way in South Thomaston.

Milhomme was not wearing a helmet.

The second, which occurred on Jan. 30, claimed the life of 32-year-old John Anderson of Stockholm.

Anderson was traveling north on Interconnecting Trail System 83 on a Polaris 600 Fusion around 9 p.m. when the machine drifted to the left side of the groomed trail and Anderson struck several trees.