EAGAN, Minn. (AP) -

An early-morning fire that swept through an Eagan apartment building has displaced about 20 people. No one was seriously hurt.

The Eagan fire department says firefighters were dispatched to the blaze Thursday about 3:30 a.m. They found flames on all three floors of the apartment building.

Authorities say 24 units at the Cinnamon Ridge Apartments had to be evacuated. The fire was brought under control in about 20 minutes, but six apartments sustained heavy smoke and water damage. The Salvation Army was on scene to assist those displaced residents.

One resident who suffered minor burns while trying to fight the fire was treated on the scene. There were no other injuries.

The Eagan fire marshal says the fire appears to have started on the balcony of one of the apartments.