Police in Barrie have laid dozens more charges against a father and son whose home was so packed with explosives it prompted a week-long evacuation last month.
William Felhoff, 75, and his son Donald Feldhoff, 54, now face 44 charges related to improvised explosive devices and chemicals found as police combed through the house and a hidden bunker.
The elder Mr. Feldhoff also faces 39 charges for firearm offences.
Both were already charged in the 1978 cold-case homicide of Michael Traynor, with the elder Mr. Feldhoff accused of being an accessory after the fact.
His son was charged with first-degree murder in the case after his arrest on July 11.
That spurred police to check out the residence the men shared, a search that led to the discovery of a two-room bunker dug into the backyard and temporarily forced roughly 60 neighbours from their homes.
Police say they eventually found 26 illegal firearms, 11,000 rounds of ammunition and more than 80 explosive devices.