He was wanted for alleged crimes during the Rwandan genocide.
French police arrested Rwandan genocide suspect Felicien Kabuga on Saturday.
The 84-year-old had been pursued by international justice for 25 years over crimes allegedly committed during the 1994 genocide.
"The arrest of Felicien Kabuga today is a reminder that those responsible for genocide can be brought to account, even 26 years after their crimes," said Serge Brammertz, chief prosecutor of the Mechanism for International Criminal Tribunals in The Hague.
Kabuga is Rwanda's most-wanted man and is the subject of a $5 million (€4.6 million) bounty offered by the United States.
