HARRISON — A 43-year-old motorcyclist was seriously injured after running into a tree on Maple Ridge Road Thursday night, police said.

According to the Cumberland County Sheriff’s Office, the accident occurred around 9:25 p.m. The office said Jody Scott was found unconscious on the front lawn of 866 Maple Ridge Road with serious injuries to his head and body.

Scott was taken to Central Maine Medical Center on a Life Flight helicopter.

The sheriff’s office said Scott was not wearing a helmet. It appeared that his motorcycle went off the road on a slight curve and hit a tree, and speed and alcohol may have been factors, the sheriff’s office said.

Officials said they don’t have a current address for Scott, but he is believed to be from the Harrison area.

The accident reconstruction team is investigating the cause of the crash.