3 people died from suspected opioid poisonings in Halton Hills, Ontario; police warn residents to be vigilant.

3 people are dead from suspected opioid poisonings in Halton Hills, Ontario, since Friday, prompting police to warn residents to be vigilant and aware. Two men and one woman died from inhaling an unidentified substance. The Halton Regional Police Service and the Office of the Coroner are investigating the incidents, reminding the public that drug poisoning is a medical emergency and urging anyone experiencing symptoms to call 9-1-1.