A Rome prosecutor said Wednesday that he suspects a former United States official and a deceased Italian spy may have been involved in the murder of Italian premier Aldo Moro. The Christian Democrat (DC) leader, architect of the so-called Historic Compromise in the 1970s with the Italian Communist Party (PCI), was kidnapped by the Red Brigades (BR) extreme-left terrorist group on March 16 and killed 55 days later, on May 9, 1978.