GIBRALTAR, MI – Rescue crews are looking for a missing boater in the Detroit River.

Fox 2 in Detroit reports a 42-year-old woman was last seen near Gibraltar when she jumped into the water to go swimming Wednesday night. She was not wearing a life jacket.

Crews are focusing their search in the area between Humbug Marina and Calf Island. The Downriver Dive Team, Grosse Ile Search Team and the U.S. Coast Guard are leading the search.