The St. Clair River Classic Offshore Powerboat Races came to a tragic end.
Two boats, The American Ethanol CatCanDo and Miss Geico, collided at about 4:40 pm Sunday.
The collision severely injured one man.
The victim was raced to St. John River District Hospital in East China Township where doctors eventually pronounced him dead.
Police say other boaters involved in the crash had minor injuries, but they were not hospitalized.
All boats were removed from the water and the race was halted.
Investigators are looking into the incident.