PAULSBORO, N.J. (AP) — A week after a train derailment released a hazardous gas into the air in New Jersey, most residents who live nearby were heading back home Friday.

Officials said that as of noon, air monitors had not detected any vinyl chloride for more than 24 hours, showing it was safe to end mandatory evacuations in Paulsboro, an industrial town across the Delaware River from Philadelphia International Airport.

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