CEDAR FALLS, Iowa (KCRG) - Investigators are working to figure out what caused a fire early Wednesday morning in Cedar Falls.

Cedar Falls Public Safety says firefighters were called to the 2400-block of West 4th Street at 2:03 a.m.

Firefighters at the scene found a fire on the outside of the building and put the fire out.

All people inside the building were evacuated.

The building has smoke and fire damage.

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