DENVER (CBS4)– Firefighters battled a fire inside a high rise in downtown Denver on Wednesday afternoon.

The building near 20th and Broadway was evacuated while firefighters searched for trapped residents inside the elevators.

Copter4 flew over the building, where no smoke was visible but several fire engines could be seen on the street below the high rise.

Firefighters believe an elevator motor may have caught fire, triggering the fire alarm.