A TTC worker has been killed after being hit by a subway train near Yorkdale Station.

The TTC says at about 4:45 a.m., Friday, two employees were struck by a work car north of the Yorkdale Station on the Spadina line.

The worker has been identified as 49-year-old Peter Pavlovski who had been working with the TTC since 1990. The TTC says Pavlovski was a Road Master - a subway track and tunnel foreman.

LEAVE YOUR CONDOLENCES HERE

The TTC says a crew of seven workers, under Pavlovski's supervision, was performing work on the northbound track in the open-cut area of the Spadina subway line north of Yorkdale Station when he and another crew member were struck by a southbound work car.

The other worker was taken to hospital with serious injuries but non-life threatening.

There is no subway service between Downsview and Lawrence West but shuttle buses have been called in to move passengers between those stations.

The closure affected the entire Yonge-University-Spadina Line throughout the morning rush because many of the trains used were stranded at the Wilson train yard.

Trains were also taken from the Bloor-Danforth line to help augment service.

TTC CEO Andy Byford who briefed the media several hours after the fatal accident says it's a terrible day for the transit community.

"It's the worst possible thing that can happen in transit. We're all a family, at the end of the day we all work in transit. We know that it can be a dangerous environment but we have very very strong safety regulations and a strong safety culture to protect people, so to have this happen is both shocking and tragic, and our thoughts are with the family today," says Byford.

Byford and TTC union boss Bob Kinnear both stressed that the TTC's safety regulations are very strict so it's too soon to make any speculations as to what happened.

The last time a TTC worker was killed on the job was more than 5 years ago. Tony Almeida died on April 23, 2007, after a work train crash in the subway tunnel between Lawrence and Eglinton stations.

TTC Statement

This morning, at about 4:45, two Toronto Transit Commission employees were struck by a work car just north of Yorkdale Station on the Spadina line. One is injured and one, sadly, has lost his life. The TTC will not be releasing names at this time. Our thoughts are with our employees' families and co-workers during this very difficult time.

The TTC is investigating this incident with all of its resources and will work closely with the Ministry of Labour.

Service on the Yonge-University-Spadina line is severely affected this morning, as trains scheduled to leave Wilson Yard, north of the incident site, are unable to leave the yard. The TTC has taken some trains from the Bloor-Danforth line to augment service, and shuttle buses will be operating between Downvsiew and Lawrence West Stations.

TTC CEO Andy Byford is en route to the incident scene and will be available to media following a briefing from his staff there.

Further statements will be forthcoming throughout the day as more information becomes known. Follow @TTCNotices for service updates throughout the day.