Ottawa police are looking into a sexual assault that happened early Saturday morning.

It happened in the area of Baseline Road and Navaho Drive at about 3 a.m., when a 20-year-old woman was walking along a path towards an apartment building.

A man approached the woman from behind and pushed her to the ground, police said. He then touched her inappropriately and assaulted her.

The man fled west on foot when people in the area intervened, police said.

The suspect is described as a 35- to 40-year-old English-speaking white man standing at about five feet 10 inches to six feet tall. He has an average build with short, dark hair and a receding hairline.

He was wearing a black jacket and dark jeans.

Anyone with information is asked to call the Ottawa police sexual assault and child abuse unit at 613-236-1222 ext. 5944, or Crime Stoppers at 613-233-8477 (TIPS).