According to sources in the outfit, Mr and Mrs Muivah arrived in Nagaland on March 3 and left for the national capital yesterday.
The sources further said NSCN-IM 'Chairman' Isak Chishi Swu along with his wife had also arrived in the state on March 1 and were camping at Camp Hebron, the designated Council Headquarters of the NSCN-IM with an intention to attend the high-level meeting of the Naga underground outfit.
The Forum for Naga Reconciliation (FNR), which is working hard for unity and reconciliation among all Naga underground groups, had called for the high-level meeting of top leaders of Naga rebel groups, but the NSCN (K) and Naga National Council (NNC/FGN) had refused to attend the meeting alleging that NSCN-IM groups were indulging in inter-factional clashes in some parts of the state, in Arunachal Pradesh and Myanmar.
However, recently all the three underground groups, the signatories of the Covenant of Reconciliation (COR) had agreed for the high-level meeting and the FNR is preparing for the meeting which will be fixed after consulting with all the groups.