(Troutdale, OR) -- Investigators now say it appears someone purposely set the fire that ripped through an outbuilding at Reynolds High School in Troutdale early on the morning of May 10th. The flames gutted the upper two levels of the three-story building that housed the press box. Now, Gresham Fire says there's a five-thousand dollar reward for information that leads to the arrest and conviction of the arsonist. Anyone with information should reach out to Gresham Fire.