France opened a probe into alleged crimes against humanity by Ntiwiragabo after he was found in the suburbs of the city of Orleans, about 100 kilometres south-west of Paris.
Rwanda has issued an international arrest warrant for a top former Rwandan military official, Aloys Ntiwiragabo, who is under investigation in France over his role in the country's 1994 genocide which claimed 800,000 lives.
"We have issued an international arrest warrant against Aloys Ntiwiragabo, the genocide suspect. We have investigated his case and we are working with the French unit in charge of combating war crimes and crimes against humanity," prosecutor-general Aimable Havugiyaremye told a press conference on Tuesday.
