GO Train service on the Stouffville Line has been suspended while police investigate a fatal crash involving a cyclist.
It happened east of Milliken Station shortly before 10 a.m.
Metrolinx spokesperson Anne Marie Aikins said it's believed a cyclist was crossing the tracks at Steeles he was struck by the train.
The male victim was transported to hospital with critical injuries, Aikins said.
Toronto police later confirmed that the victim died of his injuries.
Aikins said about 700 passengers on board a train stopped in the area were removed from the train and loaded onto buses to continue their journey.
A portion of Steeles Avenue East was closed for several hours to accomodate an investigation.
