SPOKANE, Washington, Aug 4 (Reuters) - A man has been arrested on suspicion of deliberately starting one of three fires that have destroyed hundreds of buildings and forced tens of thousands of people to flee their homes in and around Spokane,

Three days later, more than 10,000 acres have been engulfed, tens of thousands of people evacuated and hundreds of homes destroyed as three wildfires tear through the Spokane area.

Court documents show witnesses called 911 to report a suspicious man, who the Spokane County Sheriff's Office later identified as Aaron Farinacci, 37, now charged with first-degree arson.