UPDATE: Crews battling significant fire in Chinatown
The intersection of Spadina and Dundas has been reopened after a fire at a building in Chinatown.
There's still no word on the cause, but the building appeared to have housed a commercial unit on the lower floors, with apartments overhead.
Toronto's Fire Chief says a firefighter was injured and treated at the scene, but "is going to be fine".
There have been no other injuries reported.