Police are investigating a fatal  incident on the LRT line in downtown Calgary Tuesday.

A boy approximately five years old died around 12:15 p.m.

The boy was on the LRT platform at 7 Avenue & 3 Street S.W.

Witnesses say the train was moving when the boy somehow fell between the train and the platform.

David Ezeronye saw the accident and says "there's a little boy, he fell over the platform…the train hit his head… so his head was crushed."

Police say the boy was running to catch the train when he fell.  The gap between the train and the platform is just a few inches.

Passengers tried to rescue the boy, but there was little they could do.

Duty Inspector Terry Larson with the Calgary Police Service says "I believe there were some people who tried to provide some sort of First Aid but were not able to do much".

Victim Services is now involved, trying to help the family.

Police are offering counselling to anyone who witnessed the CTrain accident and needs helps in dealing with what they've seen.  Witnesses can call the Calgary Police Service Vicim Assistance Unit at: 403 206-8398.