The main rebel group at talks intended to restore stability to east Democratic Republic of Congo says it will return just hours after walking out.
Gen Nkunda has not attended the talks in person
The organisers have now guaranteed the security of dissident Gen Laurent Nkunda's delegates, who had left after an attempt to arrest one of them.
Neither Gen Nkunda nor President Joseph Kabila have taken part in the meeting, which began this week.
The talks were called after the failure of last year's government offensive.
Correspondents say some Congolese government figures are hostile to reaching any political deal with Gen Nkunda.
Some 800,000 people fled their homes last year in fighting between Gen Nkunda's forces and the Congolese army.
Gen Nkunda claims his forces are protecting ethnic Tutsis in North Kivu province from the FDLR (Democratic Front for the Liberation of Rwanda), a militia made up of Hutus driven out of neighbouring Rwanda after the 1994 genocide.