The fire was at the River Park Apartments at 79th and Wheeling.
Massive flames shot into the sky as firefighters worked to calm the blaze.
Fire crews contained the flames, but continued to fight flames that would pop up.
Some smoke is still coming out of that building now, but the fire is out and the situation is under control.
EMSA was on the scene, nobody was injured.
One resident believes the fire started when her neighbor fell asleep on the couch with a cigarette.
Updates on FM 102.3 and AM 740 Newstalk KRMG.