Provincial police say chemicals have been found at the scene of a fire in New Tecumseth.
The OPP spent Tuesday at a home on the 9th Line, west of the 20th Sideroad. This is the third straight day they have been on the property investigating the circumstance of the fire.
Police have confirmed they are treating the fire as a criminal investigation, but are staying mum on the details.
Firefighters were first called to the property on Sunday.
