The D.C. fire department says nine people were sickened by carbon monoxide at the National Press Building and sent to area hospitals.
Four adults and five children were taken to the hospital for carbon monoxide poisoning Thursday night in Fairfax.
D.C. fire officials are investigating a condo building in Southeast for potentially high levels of carbon monoxide.
Prince George’s County police say a family of five is in critical condition after being exposed to high levels of carbon monoxide in their home.
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