Watford City, ND – A carbon monoxide poisoning at a Watford City laundromat hospitalized 14 people today.

Emergency crews were called to Expressway Laundry around noon after an 18-year-old girl passed out.

Responders say they believe people were breathing in exhaust from a malfunctioning vent from a boiler mixed with cleaning chemicals.

The Department of Health is investigating.

In the meantime, the laundromat has been closed and a gas line to the business has been shut off.