A father and son each face 44 charges relating to improvised explosives devices (IEDs) and chemicals found at a Barrie home last month that forced neighbouring homes to evacuate twice.

William Feldhoff, 75, and Donald Feldhoff, 54, also face an additional 39 firearm-related offences, police say.

The home on 30 Virgilwood Cres. belong to the two who were arrested in connection with a cold-case murder.

Donald Feldhoff met with police on July 11 and was charged with first-degree murder of 26-year-old Michael Traynor after confessing to police. His father was charged as an accessory after the fact.

The investigation into Traynor’s death remained unsolved decades after his body was found in a wooded area in October 1978. Police said he had been bound and shot more than once in the chest.

It was during the interviews with the father and son that police learned about the various firearms, explosives and booby traps at their home. The son was a weapons enthusiast and a survivalist, police said.

Police say the recovered 26 illegally possessed firearms, over 11,000 rounds of ammunition and more than 80 improvised explosives devices, as well as various chemicals.