A fire in a vacant house in Mercer County jumped to a neighboring house overnight.

Those homeowners were across the street at the time so no one was hurt. The fire on Walnut Street in Sharon is the latest in a series of blazes that have vexed firefighters.

“This year alone, we’ve had, I think, 19 fires (and) 16 were suspicious in nature,”said Sharon police Chief Gerald Smith
On July 31, a juvenile was arrested for starting fires in five vacant homes in one day, according to the Sharon Herald.

Two weeks earlier, they arrested John Andrew Burns; he is suspected in at least a dozen suspicious fires, the Herald reported.

Thursday night’s fire is under investigation.