MACKINAC COUNTY -- A boating accident on Lake Huron, near Munuscong Bay, is under investigation by the Mackinac County Sheriff's Department.
    
It's believed that the victim fell overboard sometime between 12 and 7:30 in the morning on September 30.
    
The unmanned boat, showing no signs of damage, was found by a fisherman.
    
Searches were conducted through October 4 when officials suspended the search.
    
The missing man is believed to be 37-year-old Roger Reif, described as a white male, 6 foot 4 inches tall, weighing 170 lbs. with blonde hair and blue eyes. 

Reif is from Snowmass Village, Colorado.