BRIDGEPORT - Bridgeport officials say a fire in the Hollow section of the city left several families homeless Thursday morning.

Fire officials say the flames broke out sometime after 3 a.m. at 447 Grand St. 

Officials say 13 people in the home were displaced by the fire. 

Authorities say they have brought in police dogs to sniff for evidence of arson and expect to know the cause of the fire within a week or two.  

The say no one was injured in the blaze.