Nine people were hospitalized after a hotel near Baltimore/Washington International Thurgood Marshall Airport was evacuated due to high levels of carbon monoxide.
A Walmart store in Laurel has been evacuated due to a carbon monoxide leak.
A carbon monoxide incident inside a home in Northwest Washington has sent three people to the hospital.
D.C. Fire and EMS officials say a carbon monoxide leak at an elementary school sent several people to hospitals.
A carbon monoxide leak hospitalized 14 people and forced approx. 150 residents to evacuate from a 10-story apartment building in Bethesda on Saturday.
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.