Two vessels collided on Lake Joseph Saturday night leaving an American man dead.
West Parry Sound OPP say the fatal collision was near Emerald Island in Seguin Township at approximately 11:30 p.m.
A 64-year-old, man from Florida was fatally injured and a 48-year-old, woman from Markham, Ontario, sustained critical injuries.
The investigation is being conducted by OPP North East Region Crime Unit, North East Regional Support Team, OPP Forensic Identification Services, and the OPP Technical Marine Collision Unit under the direction of OPP Detective Inspector Martin Graham.
The OPP is asking for anyone with relevant information or who may have been in the Emerald Island area at the time in question, to call the West Parry Sound OPP at 1-888-310-1122 or Crime Stoppers at 1-800-222-8477.