Fayette County, OH – A December fire that killed a woman and her three grandsons in Fayette County was likely caused by a propane gas explosion, the State Fire Marshal’s office has ruled.

Due to extensive damage, investigators were unable to determine the source of the gas leak or in what room the explosion occurred. The home at 5602 Inskeep Rd. near Washington Court House was heated by propane.

Officially, the cause will be ruled as undetermined, investigators said.

The Dec. 26 fire killed Terry Harris, 60, and her grandchildren, Kenyon, 14, Broderick, 11 and Braylon, 9.

The fire was reported just after 4 a.m. and flames could be seen for miles away.

“We encourage everyone to check their homes for any gas leaks and to get out of their home if they smell gas,” Fire Marshal Larry L. Flowers said in a news release. Homeowners are also encouraged to have working smoke alarms on every level of the home and in each bedroom or sleeping area.