Tito Barahira, 65, and Octavien Ngenzi, 58, were tried over attacks against ethnic Tutsis in the town of Kabarondo, where they both have been mayor. They denied any wrongdoing.
Ethnic Hutu extremists killed more than 800,000 Tutsis and politically moderate Hutus in a three-month rampage in 1994 while the world largely stood by.
A number of Rwandan genocide-related crimes have been tried in recent years in Rwanda and other countries. This was the second such trial in France, which can rule on such cases since parliament adopted a law that gives it universal jurisdiction over cases of crimes against humanity.
