Ten horses were killed after roaming on Highway 1 west of Virden Sunday evening.
RCMP say 17 horses were at large at about 7:40 p.m., when six were hit by a passing train and another four were hit by semi truck traffic.
Another horse was injured and taken to a local veterinarian.
The owner of the horses managed to locate and round up the others.
Police are investigating how the animals became loose in the first place.
