Update — Friday, September 14, 1:30 p.m.: Subway service has resumed.

The TTC has shut down subway service along the Spadina branch of the 1 Yonge - University - Spadina line between Downsview and Lawrence West Stations this morning.

According to the Toronto Star, a TTC employee is dead and another in serious condition after a service train struck them near Yorkdale Station around 5 a.m. this morning, Friday, September 14.

The second employee suffered serious but “non-life-threatening” injuries. A Toronto Emergency Medical Services official told the Star that the man has been rushed to a trauma centre.

The TTC is operating frequent shuttle buses between Downsview and Lawrence West. It’s also encouraging passengers to ride buses to the Yonge branch of the subway to travel to and from downtown Toronto.

Passengers who would usually board the subway at Downsview Station can, instead, ride TTC buses operating along the 84 Sheppard West and 196 York University rocket routes to connect with the Yonge line at Yonge - Sheppard Station. Passengers who usually use Wilson Station can transfer to buses operating along the 96 Wilson or 165 Weston Rd North routes to reach the subway at York Mills Station.

However, note that since the closed section of the subway also means that trains that usually operate from Wilson Yard can’t enter service this morning, service along the entire subway line between Lawrence West and Finch Stations is operating with fewer trains.

The TTC is diverting some trains from the 2 Bloor - Danforth line to Yonge line, but service continues to be severely limited throughout the subway system.