The arrest of Félicien Kabuga, one of the alleged financiers of the Rwandan genocide, has been welcomed by victims and survivors organisations that have pushed for justice for the 800,000 Tutsi and moderate Hutus who were killed in 1994.
"We welcome the fact that France has been cooperative... but we hope that these efforts continue so that other criminals on French soil and elsewhere in Europe can also be apprehended and brought to justice.
According to CNLG, Rwanda has issued around 30 arrest warrants for genocide suspects living in France.
One of the most prominent is Agathe Kanziga Habyarimana, the widow of former President Juvenal Habyarimana, who successfully fought in French courts for a residence permit to stay in France.
Another key suspect is Hyacinthe Nsengiyumva Rakifi, who was minister in the genocidal government, and the only minister not indicted by the Prosecutor of the International Criminal Tribunal for Rwanda (ICTR).