Authorities say a stubborn three-alarm fire at a building housing a Roots store in the heart of the busy Queen Street West strip is suspicious.

The flames erupted around 1 a.m. Tuesday at the building on Queen West at Soho Street, which houses the Roots store on the ground floor and apartments above.

An explosion was heard but fire officials are still trying to determine what caused it. Police and officials from the Ontario Fire Marshal’s office tell CityNews the blast may have been the result of a possible firebomb, or caused by someone tampering with a gas line.

The blaze caused the roof to collapse on the second floor. No injuries were reported.

Firefighters heard the explosion as they were pulling into the nearby Adelaide Street fire hall after a separate call.

Investigators still haven’t been able to get inside the burnt-out structure and engineers will have to inspect it to determine if it’s sound enough to allow Queen Street West to reopen between John Street and Spadina Avenue.

Fire at former Toronto Comic shop Silver Snail

A 3-alarm blaze engulfed the building of former comic-book shop The Silver Snail at Queen St. West and Soho St. More at

Storified by · Mon, Oct 29 2012 22:02:36

Queen & soho fire! (by woken-from-sleep @missbrat)
Queen is on fire!!!!!!!erinstagrams
Major fire at queen & Peter #toronto #Sandy #hurricanesandy #storm Donovan