France launched the investigation, that also targeted Rwanda’s former defense minister James Kabarebe, in 1998 following demands by relatives of the French crew who died when president Juvenal Habyarimana’s plane was downed.
The investigation, and accusations by Rwandan officials that France was complicit in the 1994 genocide, damaged relations between the two countries for several years.
The judicial source said on Wednesday that the charges were dropped on Dec. 21. A French prosecutor had recommended in October that the charges should be dismissed due to insufficient evidence.
Rwanda said on Dec. 24 that it welcomed the definitive end of what it called a politically-motivated investigation.