French officials took custody Wednesday of an old comrade-in-arms of Rwanda's president charged over an assassination in the run-up to the 1994 genocide, amid mass anti-European protests in Kigali.
Germany extradited Rose Kabuye, a former guerrilla leader who now serves as chief of protocol to President Paul Kagame, ten days after police acting on a French warrant arrested her as she arrived at Frankfurt airport.
French officials took charge of her in Frankfurt, and she was flown to Charles de Gaulle airport in Paris aboard an Air France jet.
French investigators suspect Kabuye, 47, of involvement in the downing of a plane that killed presidents Juvenal Habyarimana of Rwanda and Cyprien Ntaryamira of Burundi and two French pilots on April 6, 1994.
Habyarimana's ethnic Hutu supporters went on the rampage following the attack, slaughtering 800,000 ethnic Tutsi and moderate Hutu men, women and children in an horrific 100-day orgy of bloodletting.
French investigators accuse Kagame's Tutsi rebels of attacking the jet, although other observers have speculated that Hutu hardliners killed their own president to serve as a pretext for the subsequent killings.
Kabuye was a senior military leader during Kagame's successful war to drive out the genocidal Hutu militias, and the arrest of his trusted lieutenant has cast a fresh chill on already frosty ties with France.
Rwanda severed diplomatic relations with Paris in 2006 after a French anti-terrorism judge issued their first arrest warrants over the case.
Kagame accuses France of having actively supported the Hutu militias, and the legal dispute has stymied attempts by both governments to re-establish friendly ties 14 years after the massacre.
He has accused Europe of persecuting the genocide's survivors instead of hunting its perpetrators, some of whom are said to be living in Europe.
Large numbers are also believed to be involved in unrest currently shaking neighbouring Democratic Republic of Congo.
"It is not only Rose who is in the dock, it is Rwanda that is in the dock," Kagame said on Monday.
Her arrest led to three days of demonstrations in Rwanda and on Wednesday tens of thousands of people again took to the streets of Kigali to again vent their anger.
Large numbers converged on the German embassy -- Rwanda expelled the German ambassador after Kabuye's arrest -- and the local offices of German broadcaster Deutsche Welle, an AFP correspondent said.
"Mrs Kabuye is calm. She's a real fighter. You must know she faced other battles. She spent years in the bush after her family was expelled from Rwanda in the 1950s," Kabuye's lawyer Bernard Maingain told AFP Tuesday.
Kigali, however, may soon turn the tables on Paris.
Judicial sources there say Rwandan prosecutors could soon issue warrants and indictments against some of the 33 political and military French officials named in a Rwandan report on France's alleged role in the events of 1994.
These who could find themselves accused include former prime ministers Alain Juppe and Dominique de Villepin and former foreign minister Hubert Vedrine.
Some European investigators fear that Kabuye deliberately delivered herself to German authorities so her lawyers could gain access to the case files prepared against her and other Kagame allies.