Abdullah Al Senussi, Muammar Gaddafis much hated spy chief - seen here proclaiming victory for his leader just days before the fall of Tripoli last year.<br/> <br />The last significant old regime figure still-at-large was arrested in this airport in the West African state of Mauritania on Friday.<br/> <br />He was reportedly travelling with his son on a flight from Morocco, carrying a fake passport from Mali.<br/> <br />Gaddaffi's right hand man and brother-in-law, Senussi was indicted by the International Criminal Court for war crimes last year.<br/> <br />But Mauritania has not signed the statute governing the Netherlands-based war crimes court.<br/> <br />In Tripoli, Libyan government spokesman Nasser Al Manee said authorities were pressing for Senussi's extradition.<br/> <br />He said the prosecutor general had already sent an extradition request to Mauritania so he could stand trial in Libya.<br/> <br />News of Senussi's arrest was greeted with jubilation in Tripoli.<br/> <br />(SOUNDBITE) (Arabic) TRIPOLI CITIZEN, AL-AMORY ABDULAH, SAYING:<br/> <br />This is the happiest moment for Libyans I wished we had arrested him here. No matter how much we subject him to it will not be sufficient revenge for what Senussi did"<br/> <br />Senussi built up a reputation as one of Gaddafi's most brutal enforcers as chief of internal security in the 1980s.<br/> <br />Many Libyans also hold Senussi responsible for the mass killing of some 1200 inmates here at Tripioli's Abu Salim prison in 1996.<br/> <br />Sunita Rappai, Reuters
