Felicien Kabuga, 84, one of the last key fugitives wanted over the genocide, was arrested at his home outside Paris on Saturday after living for years under a false identity.

Serge Brammertz, the chief prosecutor for the Mechanism for International Criminal Tribunals (MICT), told AFP Kabuga is expected to be tried in Arusha, Tanzania, where he was in 1997 indicted on seven charges, including genocide.

Arusha was the headquarters of the UN International Criminal Tribunal for Rwanda which closed in 2015, and whose duties are now being handled by the MICT.

The Arusha branch of the MICT -- which also has an office in The Hague -- is housed in a United Nations complex where it has an ultramodern courtroom and conserves the archives of the Rwanda genocide trials.

The first to appear in the courtroom was Augustin Ngirabatware, planning minister at the time of the genocide who was found guilty of inciting, aiding and encouraging Hutu militiamen to kill their Tutsi neighbours.