The FBI announced a $10,000 reward Sunday for information leading to the arrest of the person or people responsible for an apparent attack on an Oregon Islamic center that was attended by the man authorities say was behind a foiled bomb plot at a recent Portland Christmas tree lighting.

A fire appears to have started sometime early Sunday morning at the Salman AlFarisi Islamic Center in Corvallis, Oregon, authorities said. The building suffered some fire and smoke damage.

Mohamed Osman Mohamud, who was seized in connection with the plan to detonate what he thought was an explosives-laden van at a Portland tree-lighting ceremony Friday night, occasionally attended the center, the mosque's imam told CNN.

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