Three members of the same family, along with a fourth person in another car, have died after a head-on crash on Highway 30 in Chateauguay.
Quebec Provincial Police say it appears one vehicle entered Highway 30 from a ramp in the wrong direction and struck an SUV heading west (near the exit for Haute-Riviere Road).
Two people in their 80s and a 15-year-old believed to be from the same family were in the wrong-way vehicle and all three were killed.
The other vehicle, believed to be from Ontario, carried five people.
One of them, a 56-year-old female passenger, died while the four others in the SUV suffered serious but non-life threatening injuries.
The crash occurred shortly after midnight on the highway immediately south of Montreal and has since reopened to traffic.