Girl, 6, dead, baby sister fighting for life after multi-vehicle crash in Laval, Que.

A Laval police logo is seen on a police car in Laval, Que., Tuesday, Oct. 18, 2022. (Ryan Remiorz/The Canadian Press)

LAVAL — A six-year-old girl has died and her infant sister is fighting for her life following a multi-vehicle crash Monday night in Laval, north of Montreal.

Laval police Lt. Geneviève Major says the six-year-old was pronounced dead today in hospital while her five-month-old sister was in critical condition in hospital.

The crash involving four vehicles sent nine people to hospital, including the young victims’ parents.

The violent collision occurred about 7:30 p.m. on Monday on Route 335, near Dagenais Boulevard, after a northbound vehicle lost control and struck three others in both the north and south lanes.

Major says investigators met with a 40-year-old man involved in the collision and considered an important witness in the case.

He was released under a promise to appear at a later date as the Crown asked for additional information.

Major said the incident remains under investigation and could take months to complete.

This report by The Canadian Press was first published Jan. 6, 2026.