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Updated: Wed, 23 Apr 2014 07:26:09 GMT | By CBC News, cbc.ca

Firefighters injured battling Mississauga pesticide warehouse blaze



Firefighters are battling a three-alarm fire at a pesticide storage warehouse in Mississauga Wednesday morning. Tony Smyth/CBC

Firefighters are battling a three-alarm fire at a pesticide storage warehouse in Mississauga Wednesday morning. Tony Smyth/CBC

Four firefighters have been injured and one of them is in critical condition after fighting a three-alarm fire at a pesticide storage warehouse in Mississauga, Ont., early this morning.

The firefighters were being treated after a wall collapsed and an explosion occurred at the industrial facility on Thamesgate Drive, in Malton, just north of Toronto Pearson International Airport, according to a CBC News camera man at the scene.

Emergency crews were called to the blaze around 4:30 a.m. ET. All crews were ordered to leave the structure and battle the fire only from the exterior after a Mayday call went out following the wall collapse, which reportedly trapped three firefighters briefly.

Explosions could be heard in quick concession as officials got word from the building owner, who was en-route to the scene, that a large amount of pesticides and aerosols are stored in the building. 

The fire has reportedly been extinguished, but black continues to billow from the building.  

Air quality is a major concern, police said, although strong winds are blowing most of the smoke south towards the runways at the airport. 

Airport Road between Derry Road E. and Steeles Avenue E. has been closed and police are telling drivers to avoid the area. Some GO transit services have been affected by the fire.

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