15-year-old critically injured after riding on top of GO Train

A 15-year-old boy was taken to hospital with critical injuries after he collided with an object while on top of a moving GO Train early Sunday morning, police and paramedics say.

Officers responded to a medical call at the Danforth GO station around 12:30 a.m. Sunday, a Toronto police spokesperson said in an email.

Four young people got on the train heading east from Union Station and three of them climbed on the roof while it was moving, according to police. A 15-year-old boy was struck by a stationary object while on the roof and fell, the minors were able to get back inside the train and called 9-1-1, police say.

The boy is still in life-threatening condition, according to police. An investigation into the incident is ongoing.