Horseplay on a GO train platform may have led to 18-year-old Jafari Williamson’s death, Peel police say.

The teen died in a Toronto hospital Saturday afternoon, just hours after he fell beneath the wheels of a train at GO’s Clarkson station in Mississauga.

Williamson, a track star at Port Credit Secondary School, had just walked off the westbound train with two friends shortly after noon when the accident occurred. He was struck as the train pulled out of the station.

Const. Wayne Patterson said police wouldn’t reveal the story told by the friends because they don’t want to taint potential eyewitness accounts. “There’s no criminal aspect to the investigation. It appears to be misadventure.”

Pal Elion Saliaj was to have met Williamson later Saturday afternoon to play basketball. He said he and other young people who knew Jafari are stunned by his death. “He was a really, really good person at heart,” Saliaj said. “He always had a smile on his face and took others people’s burdens as his own.”

Saliaj said friends who spoke with Williamson’s chums at the accident scene confided “they were pushing each other around.”