PHILADELPHIA (CBS) — Hazmat crews were called to the scene of a partial train derailment overnight in South Philadelphia.

Police say a CSX train jumped the tracks around 3 a.m. Saturday in the company’s train yard near 11th Street and Pattison Avenue.

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Officials say eleven cars carrying crude oil were leaning off the rails.

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Hazmat crews checked out the scene and declared it safe.

There were no injuries reported.

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The cause of the derailment is under investigation.