Charles County Maryland house fire.

Authorities say four children and two adults were killed when fire ripped through a house in Charles County, Maryland. WTOP News reports one person managed to escape the blaze that broke out around 8:40 a.m. Sunday at the home in Waldorf, about 55 miles south of Baltimore. It took about 70 firefighters more than an hour to control the flames. One firefighter was hospitalized and another first responder was treated at the scene for unspecified injuries. The cause of the fire is under investigation. Master Deputy State Fire Marshal Oliver Alkire says the blaze originated on the right side of the home within an enclosed porch.