Mississippi house fire kills mother, 6 children

A house fire in Clinton, southeastern U.S. state of Mississippi, killed a mother and her six children on Saturday, according to media reports.

The victims range in age from one to 33 years, reported CNN's affiliate WJTV.

The children's father, the station reported, made it out of the home after trying to rescue his family. He was taken to a hospital with injuries.

The cause of the blaze remains unknown.

Meanwhile, in another fire incident firefighters have contained a massive building fire in the Alexandria section of Fairfax County, eastern U.S. state of Virginia, fire authorities said Saturday.

Fire crews are hitting hotspots and units are expected to remain on scene for an undetermined length of time, Fairfax County Fire and Rescue Department tweeted Saturday afternoon.

The four-alarm fire broke out in a five-story townhouse complex construction site on Saturday morning, according to authorities.

"Because the unfinished building is lacking usual fire walls and sprinkler systems, fire spread was rapid and intense," Arlington County Fire Department said in a tweet.

Thick black smoke was seen kilometers away from the site.

Traffic has been shut down in both directions nearby.

No civilian or firefighter injuries have been reported.

Fairfax County, in Northern Virginia, borders both the City of Alexandria and Arlington County and forms part of the suburban ring of Washington, D.C.