The U.N. says more than 100 opposition fighters from South Sudan have crossed the border into Congo "in extremely bad shape" and were evacuated to health facilities for medical treatment.

U.N. spokesman Stephane Dujarric told reporters Wednesday that the United Nations is consulting with the governments of Congo and South Sudan "with a view of finding solutions for these combatants."

Dujarric said the supporters of opposition leader Riek Machar were found in the area around Garamba and evacuated by the U.N. peacekeeping mission in Congo to "receive urgent medical assistance, pending their voluntary disarmament."

Machar, who was vice-president in South Sudan's unity government, fled the capital, Juba, in July after fighting with forces loyal to President Salva Kiir left hundreds dead. He crossed into Congo and then to Sudan.