Moments after a woman was struck and killed by a GO train in Scarborough, police responded to reports of gunshots nearby.

The woman, 65, was struck and killed east of the Guildwood GO station. Passengers were held on the train west of the station for more than three hours so police could investigate the death and reports of gunshots nearby on Scarborough Golf Club Rd.

Police tweeted a message to passengers telling them their train had “struck a pedestrian” at about 9:40 p.m. Sunday night.

“Seconds later however, we received multiple 9-1-1 calls for sounds of gunshots. Your train came to stop right in the middle of that scene. We have not confirmed the threat has passed,” the message read.

At 12:25, police said the reports of gunshots were not connected to the person who was struck and killed by the GO train.

The train and its passengers got going again at around 12:50 a.m. after police investigated the woman’s death. Toronto police Const. Victor Kwong said the death was a suicide.

Kwong said there were reports of people fleeing after the gunshots. But when police searched the area they did not find suspects or victims.

Train service on the Lakeshore East line was delayed and trips between Oshawa and Union Station were cancelled. Regular service on the Lakeshore East line resumed Monday morning.

With files from Alanna Rizza

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