Police in northern Ontario are investigating a troubling case of possible Halloween candy tampering after a family in the Mattawa area discovered a re-sealed chip bag containing a substance that tested positive for suspected morphine.
According to the North Bay detachment of the Ontario Provincial Police (OPP), the family — who live in the Chenier Road area of Papineau-Cameron — made the discovery on November 1, prompting an immediate police response. Officers performed a preliminary field test, which detected traces of what appeared to be morphine.
Authorities say there have been no additional reports of similar cases, but the investigation is ongoing as officers work to trace the bag’s origin and assess whether there is any broader public safety risk.
As a precaution, the OPP is urging parents and guardians across the province to thoroughly inspect their children’s Halloween candy. Police warn to look for tears, holes, irregular seals, or other signs of tampering, including packaging that appears to have been re-glued, taped, or altered in any way.
“This is a serious situation,” police said in a statement, emphasizing the importance of vigilance even if packaging appears unopened.
While investigators believe this may be an isolated incident, the OPP is reminding families to remain cautious and report any suspicious items immediately. For the community of Mattawa, what began as a night of fun and treats has now turned into a stark reminder of the need for safety and awareness every Halloween.

