Toronto fire crews responded to a two-alarm fire downtown around 11.30 am on Monday, March 23, local media reported.
A call came in just before noon reporting a blaze at a boarded-up heritage building near Spadina Avenue and Wellington Street West.
The Toronto Fire Service reported that explosions were heard inside the building, which was believed to be vacant, reports said.
This video shows the heavy smoke billowing from the site of the fire. Credit: Corrado Coia via Storyful