The long-running probe has been a major source of tension between the two countries following accusations that a Tutsi militia headed by current Rwandan President Paul Kagame was responsible for the attack on the plane in April 1994.
The missile strike near Kigali's airport sparked 100 days of slaughter of the Tutsi ethnic minority by members of Habyarimana's Hutu ethnic group, leaving an estimated 800,000 people dead.
Kigali has long accused France of complicity in the genocide by supporting the Hutu regime, training the soldiers and militiamen who carried out the killings.
The relationship took an even worse turn when the French judiciary decided in October 2016 to reopen an investigation into the attack on the plane, as the French crew were among the victims.
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In October, sources close to the probe told AFP that the judges had heard from a new witness who claimed to have seen the surface-to-air missiles used to launch the attack at the headquarters of Kagame's militia.
The testimony corroborates other versions of events that point the finger at Kagame's regime.
A total of seven people have been charged in France over the deaths, including Rwanda's current defence minister, James Kabarebe, and Franck Nziza who allegedly fired the missile.
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