A truck and a house with an attached garage were damaged in one of three fires that Winnipeg crews responded to on Saturday that all involved a block heater.

Preliminary investigations suggest each of the three fires were accidental and involved a plugged-in block heater.

Fire crews are reminding people not to plug in vehicles while parked inside garages because flames can quickly spread to other structures in the event of a fire.

Firefighters also suggest people check their block heaters for any frayed cords or replace the extension cord if it’s accidentally been driven away with it still plugged into an outlet.