A fourth official to work for the U.S. occupation authority in Iraq has been arrested and charged with corruption while overseeing Iraqi reconstruction projects. Government investigators say Lt. Col. Debra Harrison received at least $80,000 dollars, a luxury sports-utility vehicle and several illegal weapons in exchange for steering reconstruction contracts to a US company operating in Iraq. Three other former occupation officials have been arrested on similar charges since October. Prosecutors say several further indictments are forthcoming.