NOUAKCHOTT  - Libya's vice-premier said Monday his country was determined to have Muammar Gaddafi's ex-spy chief, also wanted by the International Criminal Court, extradited to stand trial on home soil. "We are determined to get (Abdullah) Senussi back, because this man has committed crimes against Libyans. He must answer to these in Libya, in front of Libyan courts," Mustafa Abu Shagur said on arrival in Mauritania where Senussi was arrested Friday. "We are in Mauritania among our brothers. Without doubt there are common interests between Mauritanians and Libyans which we value," he added.

Mauritania has received a flurry of extradition requests, with both France and the ICC in The Hague keen on prosecuting Gaddafi's feared former right-hand man.

Senussi, brother-in-law to the slain dictator Gaddafi and said by some to have been the "black box" of the former Libyan regime, is still in the hands of Mauritanian police.

The country is not party to the treaty that set up the ICC and officials want to carry out their own investigation before it considers any extradition requests.