Montgomery County fire officials say eleven residents of a Rockville apartment building have been sickened by carbon monoxide.
Assistant Fire Chief Scott Graham says firefighters were called to the 1200 block of First St. about 2 a.m. Tuesday for possible high carbon monoxide levels in the building. Rescue crews at the scene evaluated several residents and 11 were taken to hospitals. Graham says none of the patients are in critical condition.
Graham says a malfunctioning hot water heater was to blame for the leak.