The search for remains of two children in the rubble of a burned Kingdom Road house entered a second week with no success Monday.
Sheriff Randall Boyce said "eight to 10" Tennessee Bureau of Investigation and state fire/arson investigators were combing through the home's ashes looking for possible evidence that Chloie Leverette, 9, and Gage Daniel, 7, were inside when it burned late Sept. 23.
Their grandparents, Leon "Bubba" and Molly McClaran, are confirmed dead.
Bedford County fire chief Mark Thomas said his firefighters were not at the fire site Monday. Their return, if any, will be based on future TBI requests, Thomas said.
A headquarters for the search efforts has been set up in a nearby church.
The TBI issued somewhat-conflicting statements last week, issuing a regional Amber Alert since no remains of the children were found after repeated searches, yet stating no foul play is suspected.
Some local officials have said they suspect the children did lose their lives in the intense heat.
Firefighters described the blaze as "unusually hot" and remains of many propane tanks were found within the home's rubble.