Three young people are dead and a fourth is in hospital with life-threatening injuries after a single-vehicle crash near Hanover on Tuesday.

West Grey OPP say they were called to Concession Road 2 in the area of Allan Park Road.

"Despite the best efforts of all on scene, three youths were pronounced deceased at the scene," police said in a statement.

The fourth young person was flown by ORNGE helicopter to London Health Sciences Centre.

Alex Ruff, the Conservative MP for Bruce-Grey-Owen Sound, expressed "deepest condolences" to the families, friends, and communities of the young people.

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