(Dallas, OR) -- Police are releasing the identities of three people killed in a house fire near Dallas. The Polk County Sheriff's Office says 75-year-old Patricia Dye, 64-year-old Charles Hargrove and 68-year-old Wayne Hill died in the fire Sunday. The cause of the fire remains under investigation, but investigators say it appears to have started in a first floor bedroom. Officials say 57-year-old Miller Blake was injured in the fire, and he's recovering at a Portland area hospital.