The Ohio state fire marshal is now offering a $5,000 reward.
It's to find information about the fire that killed 66-year-old Joseph Browning last month.
That fire burned a house on hardscrabble road in West Portsmouth.
Investigators know Browning was killed.
His house was ransacked.
Sheriff's investigators have interviewed neighbors and family members, but have not been able to make an arrest.
Now they hope the $5,000 reward will get someone to come forward and provide information that will lead to the killer.