Italy : The missing woman had known Giordano for ` ` over a year , '' her friend said . Italy 's solicitor general says the suspect now is not known to authorities . The FBI is helping in the case by conducting interviews , a spokesman says . Both the missing woman and the man termed the prime suspect are U.S. citizens .
NEW : The missing woman had known Giordano for `` over a year , '' her friend says . Aruba 's solicitor general says the suspect now is not talking to authorities . The FBI is helping in the case by conducting interviews , a spokesman says . Both the missing woman and the man termed the prime suspect are U.S. citizens .