Police in Barrie, Ontario found half-a-dozen explosive devices in a house where a man and his father were arrested Thursday in a 34-year-old homicide case.

Almost 60 neighbours return Saturday after spending a second night away from their houses as a precaution.

Fifty-four-year-old Don Feldhoff is charged with first-degree murder, and his father is charged with being an accessory after the fact in the 1978 case.