The Toronto Star, August 4th:
On Friday afternoon, a woman found an object that looked like a land mine while walking her dog near a creek and called police.
…photos of the device were sent to the Ontario Provincial Police and the military ordinance disposal unit, which confirmed it was a piece of military ordinance. A search uncovered another device in the water about two metres away from the first one, which had been in a culvert under the road.
The military detonated the devices rather than risk transporting them, and has collected debris from the detonation area.
“We’re not absolutely positive at this point in the investigation that these were anti-tank ordinances,” [Strathroy police Sgt. Mike] Overdulve said, though he added that police suspect they are.