Toronto Fire crews were called to battle a growing blaze at a cardboard factory in the city's east end that took a good two hours to get under control.
Crews are expected to remain on scene until at least 10 Monday night.
The blaze broke out around 4:00 this afternoon in the Midland & Progress area of Scarborough.
Upwards of 50 fire fighters were on scene, with 13 trucks helping to put out the fire.
No cause is known, and no injuries were reported.