Officials say a hot water heater is responsible for a carbon monoxide alarm in a New Jersey college dormitory.

Drew University (Facebook)

Drew University spokesman David Muha says Foster Hall was evacuated at approximately 2 a.m. Wednesday.

The Madison Fire Department and Public Service Electric and Gas isolated the problem and vented the building.

Five students who said they didn't feel well were treated and released from a hospital.

All of the students were allowed back in their dorm rooms by 3:45 a.m.

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