Seven of nine fires in Estill County this year are believed to be arson, and another one Monday, happened next door to another home that had burned down.
The latest fire happened on Substation Road, outside of Irvine.
This home, like the others, is an abandoned home that had no one living inside, and no electricity.
Firefighters say they have no idea who is setting these fires, but they are putting people and firefighters in danger.
Investigators say this is the fifth suspicious fire on Substation Road, in the past couple of months.