UPDATE: 13 year old boy struck and killed by train in St. Laurent

A teenager hit by a commuter train Wednesday afternoon has died from his injuries.

The accident happened on the Deux Montagnes line at the Bois-Franc station in St. Laurent around 4 p.m.

Police say the 13 year old was crossing a pedestrian walkway when he was struck by a train heading east, toward downtown.

Investigators say the cause of the accident hasn't been determined, but a moment of inattention hasn't been ruled out.

The train engineer was treated at the scene for shock but didn't need to be transported to hospital.