The Spokane County Sheriff’s Office said 37-year-old Aaron F. Farinacci was arrested and booked on suspicion of arson in connection with the Old Trails Fire. The fires jumped roads and rivers and had burned about 12.5 square miles (about 32 square kilometers) by Monday. Mark Gregory, a spokesperson for the Spokane County Sheriff’s Office, said the county initially received nearly 300 reports of missing people, but by Monday they had cleared all but 14. At least 390 square miles (1,000 square kilometers) has burned across Washington, which has contended with severe drought and a paltry snowpack. In central Utah, a blaze quadrupled in size over the weekend to nearly 109 square miles (282 square kilometers) by Monday afternoon.