It wasn't the heat that set a truck on fire in Blyth on Tuesday.
Police say arson is to blame for the blaze on Queen Street that was extinguished by passing paramedics just after 11 that night.
Witnesses observed two suspects running from the scene.
Two other fires were set to brush piles at the sewage plant at the end of June.
Police suspect that two males, possibly in their early teens, are responsible.
Any person with information regarding these incidents should immediately contact the Huron OPP at 1-888-310-1122 or (519) 524-8314. Should you wish to remain anonymous, you may call Crime Stoppers at 1-800-222-TIPS (8477), where you may be eligible to receive a cash reward of up to $2,000.