Italy : The missing woman had known Giordano for ` ` over a year , '' her friend said . But no witnesses have come forward to say they saw Gardner and Giordano snorkeling off Baby Beach , Stein previously has 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 .
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 .