The latest incident occurred early on Aug. 30, when police noticed a plume of smoke coming from a local residence.
An officer investigated and found a Chevy Silverado in a driveway, fully engulfed in flames.
Neighbours heard a loud bang before the fire and police say an investigation determined a 'low order explosive with incendiary properties" caused the fire.
Police say they don't believe the incident was a random act of violence but have not yet determined a motive.
Mounties say they're still investigating a January incident, during which an explosive device destroyed another vehicle.