A dozen people in southwest Houston are hospitalized after carbon monoxide leaked into their apartments.
Houston firefighters were called Saturday night to the Vista on Gessner apartments. A fire district chief told KHOU that the department evacuated the building after residents complained of nausea, vomiting and severe headaches.
Their conditions were not immediately known.
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Firefighters believe a problem with a vent serving dryers in the complex caused carbon monoxide to flow into the apartments nearby.