At least five people have been kidnapped in a Congolese gold mine, the second of such an attack by militiamen, authorities in the Central African nation say.
A French citizen, Tanzanian and three Congolese nationals are being held hostage by the armed men.
Militiamen in Congo, especially in the South Kivu province are active, although the conflict there ended in 2003.
France said it is working to secure the freedom of its citizen who works for the mining company, Banro Corp.
The French have mobilized and are in contact with the Congolese authorities to shed as much light as possible on what happened.
The attack happened in Namoya gold mine in the eastern Democratic Republic of Congo.
In Eastern Congo, many of the commanders of the armed groups lead forces that have been responsible for numerous war crimes for which few have been held accountable.