WAYNESBURG — Natural gas service had been turned off nearly two years ago at the house in which a woman and six children died in a fire, officials said Sunday.

Fire swept through the house early Saturday, and police said the young victims were four girls who ranged in age from 5 to 10, and two boys ages 2 and 3. The woman was the mother of three of the children. Another person was injured in the blaze.

The house had been without natural gas service since May 2005, said Patricia Kornick, spokeswoman for Equitable Resources, which serves the area.

Autopsies showed the victims "died as a result of carbon monoxide poisoning, inhalation of smoke and thermal burn injury." The fire killed Rebecca Eddy, 26, and her children, Tiffany Blake, 10, Rebecca Blake 9, and Diamond Blake, 7, as well as Donna Jo Arthur, 5, Joshua Arthur Jr., 3, and Christopher Arthur, 2.

Relative Joshua Arthur Sr., 28, was in serious condition at Mercy Hospital.