A commercial building that caught fire early Wednesday morning has been deemed a total loss, according to the city of Littleton.

Around 3 a.m., firefighters from Littleton Fire Rescue and South Metro Fire Rescue arrived at 5151 S. Federal Blvd. (near Belleview Avenue) and found a commercial building engulfed in flames.

Crews were able to contain the fire to one building, which was vacant.

South Metro Fire and Littleton Fire fight a commercial structure fire on 1.3.18.

Fire investigators are working with the chief building official to evaluate the property and determine a cause.

There are no known injuries and no known people inside; however, evidence of homeless activity was found in and around nearby buildings.