A homeless encampment caught fire underneath an eastern portion of the Gardiner Expressway on Sunday, officials say, sending black smoke billowing above the roadway.
Emergency crews were called to the fire, which appears to have occurred between Yonge and Bay streets, around 2:15 p.m.
Toronto Fire Services told Global News smoke and flames were visible when their crews arrived at the scene. The fire was put out a short time later.
A police spokesperson said there were reports of some explosions in the fire, possibly from propane tanks.
There is no word on what may have sparked the blaze, but firefighters said an investigator was going to attend the scene.
Crews were also called in to analyze a portion of the Gardiner to check for damage to the roadway.
No injures were reported.
Road closures were put in place.