LEVITTOWN, Pa. (CBS) – The Red Cross is assisting seven families Sunday night after a one-alarm fire ripped though a Levittown apartment complex Sunday.

The fire happened at Mill Creek Apartments in the 7000 block of Mill Creek Road at about 3:15 in the morning.

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Authorities say one person was transported to Lower Bucks Hospital in unknown condition.

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The Red Cross is providing the affected families, which include 17 people, with money for food, clothing and lodging.

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At this time, the cause of the fire is unknown. Authorities are investigating.