Officials say since November 13th, someone has set fire to 20 structures on the Eastern Shore.
All of them have been abandoned and all are in Accomack County.
The most recent was a chicken coop on Friday night.
No one has been injured in the fires that have been set between 8 p.m. and 4:30 a.m. each time.
Even though state police are pursuing leads, if you know anything about the fires, you can still take action and call them at 757-424-6820.