Virginia State police say a fire broke out at an unoccupied mobile home around 1:00 a.m. Sunday and then spread to an unoccupied two story house.
No injuries were reported.
Investigators have been busy for months tracking unknown suspects wanted in the fires of more than 70 properties.
The fires have been set in Accomack County since November.
State police are offering $25,000 reward for information leading to an arrest and conviction