Investigators remain at the scene of a fire at a building in southeast Calgary to determine the cause of a fire on Tuesday night.

Crews were called to the area at just after 8 p.m. and found thick black smoke pouring out of the building.

Through the use of thermal imaging cameras, they were able to determine that a forklift inside the structure had caught fire.

They extinguished the initial blaze and also put out a number of other spot fires.

No one was injured.