BARRIE, ON - Police have charged a father and son in the execution-style slaying of a man in this city nearly 35 years ago, investigators said Thursday.

A hunter found the body of 26-year-old Michael Traynor with gunshot wounds to his chest and his hands bound behind his back in a forest north of Barrie, ON, on Oct. 3, 1978.

Barrie Police and Ontario Provincial Police arrested Donald Feldhoff, 54, and his father William Feldhoff, 75, on Wednesday, police said.

Donald is charged with first-degree murder and William is charged with accessory after the fact.

Police couldn't say if the two men were initial suspects in the case, but did say the victim and the suspects were unrelated.

The investigation led police to investigate a home in the city's north end where officers blocked off part of the street when police found explosive materials in the house.

Traynor, an unemployed plumber, was last seen on Sept. 12, 1978, while at a bar with friends.

His family reported him missing less than a week later.

The two men have been remanded into custody.

Barrie is about 90 km north of Toronto.