PORTLAND, Maine (AP) — Police in Maine's largest city say they are investigating a motorcycle crash in which a 67-year-old man suffered life-threatening injuries.

Portland police say Buxton resident David York crashed his motorcycle on Saturday afternoon not far from the Westbrook line. They say he was transported to Maine Medical Center and remained there for treatment on Sunday morning.

Police ask that anyone who may have witnessed the crash call them at 207-874-8532.