Anishinabek police and the Lambton OPP Crime Unit are investigating a disturbance Friday afternoon at the former Camp Ipperwash lands at Kettle & Stony Point First Nation.
At about 12:15 p.m. police responded to 9356 Army Camp Rd. in Lambton Shores.
Two structures, believed to be cannabis shops, were destroyed by fire.
Smoke could be seen billowing from the area and OPP closed a section of Highway 21 in both directions for much of the afternoon.
Anyone with information is asked to contact the Anishinabek Police Service, Kettle and Stony Point Detachment at 519-786-5445 or Crime Stoppers at 1-800-222-TIPS (8477).