Two volunteer firefighters are accused of setting a fire their own department responded to.
Nicholas Leone and Dylan Dalessio are both in the Indiana County Jail facing arson charges.
They're accused of setting an Amish furniture store on fire earlier this year.
State police and federal agencies have been looking into 11 suspicious fires in Indiana County since last year.
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Police said Leone admitted to being with Dalessio when he allegedly threw a Molotov cocktail through the window of the furniture store, catching the building on fire and leveling it.
Another arson in February: flames and smoke consumed Harmony Grove Lutheran Church. The church was reduced to rubble after the fire was ruled to be intentionally set.
ATF and Crime Stoppers are putting up a $10,000 reward for any information and tips leading to an arrest.
State police said they are hoping these arrests give people some reassurance that they are aggressively investigating.