DANNEMORA, N.Y. – State police expanded the search Wednesday for two escaped murderers beyond a 16-square-mile area of woods, fields and swamps where the manhunt has been most intense. Clinton County Sheriff David Favro said Tuesday that rain in recent days has been washing away any scent dogs might find and interfering with thermal imaging devices used to detect body heat. No vehicles were reported stolen in the area, which leads searchers to believe convicts David Sweat and Richard Matt were still near the prison they escaped from.