Frigo was a vice president at Hady Construction Group in Etobicoke. He was a sports enthusiast, and trained dogs for hunting.
Frigo and a female companion — reported to be his wife but not confirmed by OPP — were in the Hullett Wildlife Conservation Area training dogs on horseback on Saturday. Investigators say an unknown male approached the couple and fired shots.
Frigo was killed. His companion was hurt but managed to escape, according to the OPP.
Clinton is about 200 kilometres west of Toronto.
Anyone with information are being asked to contact the Huron County OPP at 1-888-310-1122, or Crime Stoppers at 1-800-222-TIPS (8477).