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Video from the scene of a carbon monoxide leak in Rockville overnight Tuesday.
A close call for residents of a Rockville apartment complex.
A broken hot water heater created a carbon monoxide leak. Fire officials say the gas was then spread into several units by the fan inside an HVAC unit.
It happened around 1:30 this morning in the 1200 block of 1st Street. Fortunately, some residents were awake at that hour. When they began to feel sick, they dialed 911. Rescue crews woke up other residents and evacuated the building.
Eleven people were transported and treated at the hospital. None of the injuries are serious