A West Virginia mayor says no smoke detector was working when a fire erupted inside a home, killing six children and two adults in what he says is the city's deadliest fire in six decades.

Charleston Mayor Danny Jones tells The Associated Press only one smoke detector was found in a cabinet, and it was not working. A woman and a baby were also hurt in the blaze early Sunday morning.

Bob Sharp, assistant chief for the Charleston Fire Department, says the injured child is on life support.

It was not immediately clear how the blaze started early Saturday morning at the two-story, wood-frame home near the city's airport.

WCHS-TV says fire officials believe all those who died lived in the home. The cause of the fire is under investigation.