Three different arrests were made in a string of arson cases in Lawrenceburg.
In one instance, investigators said the suspect set fire to his own home.
Daniel Williams was charged in an October fire, the motive there is still unknown. In November, police said Gerald Doyle intentionally set a fire to a mobile home after stealing from the residence.
Just weeks ago, James Weathers allegedly put his own home up in flames to try to get insurance money.