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CAMDEN, N.J. (CBS) –
The bitter cold was a big problem for firefighters battling a vacant house fire in Camden overnight.

The fire broke out around 1:30 a.m. Thursday on the 400 block of Chestnut Street.

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Firefighters say they arrived to intense flames and heavy smoke on the first floor.

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The flames then spread to the house next door.

Crews had to also deal with the hydrants and their own equipment freezing.

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No one was injured and the cause is under investigation.