Carbon monoxide sickens workers at Fargo manufacturing plant

FARGO (KFGO-AM) - About 19 people at a Fargo business were taken to the hospital for suspected carbon monoxide poisoning.

Firefighters and ambulance crews were called to Red River Commodities at 340 40th Street Northwest. The call came in at around 2 pm Wednesday when several employees complained about headaches and nausea.

Investigators measured carbon monoxide levels of up to 300 parts per million. They say the problem may have been caused by a faulty heater.