Three people inside a townhouse on the 9800 block of Berrywood Court in the Largo area of Prince George’s County, Maryland, were rushed to the hospital after suspected carbon-monoxide poisoning; when first responders arrived at about 10:47 a.m., they found all three ill, and despite emergency care, two of the adults later died while the third remains in critical condition. The source of the leak remains under investigation by local authorities.