Authorities in Maryland are treating 11 people, including five children, for carbon monoxide poisoning.
Prince George's County Fire and EMS spokesman Mark Brady said officials were called to a three-story, 11-unit apartment building around 3:30 p.m. Thursday after a carbon monoxide detector went off. Brady says carbon monoxide levels were nearly 30 times what is considered safe.
Authorities removed 11 people from the building, five of them children ages 8 and under. Paramedics were treating them with oxygen but some were expected to be transported to a hospital for further treatment. Brady said their injuries did not appear to be life-threatening.
Officials determined the cause of the carbon monoxide to be a water heater ventilation system that had malfunctioned.
