Bracebridge OPP say a 13-year-old Toronto youth died Wednesday night in the collision between two boats on Lake Rosseau.
Five others were on the vessels when they collided around 7:30 p.m.
Four were taken to hospital with serious injuries; one was airlifted to a hospital in Toronto.
OPP Underwater Search and Rescue recovered the body of a 51-year-old Oakville woman around four o’clock this afternoon.
The investigation continues.