OMAHA - Authorities say a two-alarm fire at an Omaha apartment building early Thursday morning was caused by improperly discarded smoking materials.

The fire was reported around 2:30 AM at the Benz Place Apartment complex near 142nd Avenue and West Maple Road.

WOWT 6 News report that OFD crews arrived to smoke and flames coming out of the roof and quickly called the second alarm.

Firefighters were able to contain the blaze to the northeast part of the building.

Officials say there were no injuries during the fire, but 12 families were displaced.