NEW BRUNSWICK, N.J. (CBSNewYork) – The emergency room at Robert Wood Johnson University Hospital New Brunswick was evacuated after a contractor broke a gas main Thursday afternoon, authorities said.

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PSEG said the gas main was located just under the ambulance ramp at the emergency room near Somerset and Little Albany Streets.

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A three block area around the break was evacuated, including at least two schools, police said.

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The gas main has since been capped, authorities said.