York Regional Police need help to identify a suspect after a young woman was sexually assaulted in Newmarket early Friday morning.

The woman, 18, was walking from a GO bus terminal to Crossland Gate along a pathway that runs parallel to Davis Drive shortly before 3 a.m. when she was approached by a man who forced her to the ground.

The woman suffered minor injuries in the assault and was taken to hospital.

The suspect is described as a male, who stands about five-foot-nine with a lean build, and is somewhere between 30 and 40 years of age. His face was covered.

Police are hoping to speak to a man who interrupted the assault and helped the victim but left the scene before police arrived.

Anyone with information is asked to call York Regional Police at 866-876-5423, ext. 7071 or Crime Stoppers anonymously at 800-222-TIPS.