A married couple and a firefighter remain hospitalized after encountering high levels of carbon monoxide at a home near Oak Lawn and Turtle Creek early Friday morning, officials said.
Initially, six firefighters were hospitalized but have since been discharged.
Atmos Energy and HazMat crews responded about 1:30 a.m. to the 4200 block of Holland Avenue. A man called 911 after he woke up to his wife having a medical emergency, said Dallas Fire-Rescue spokesman Jason Evans.
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Fire crews who arrived at the scene discovered the high levels of carbon monoxide.
The levels of carbon monoxide were reportedly a result of the woman leaving her car running in the garage for more than 12 hours, Evans said. Fire crews did not pick up significant readings of carbon monoxide in the rest of the residential complex, Evans said.
The firefighters No other information was available.