The decision was taken during the emergency meeting of ATSUM and its federating units at Kangpokpi districts yesterday.
Earlier the ruling Sikkim Krantikari Morcha also lashed out at the opposition stating that it has no right to meddle in SKM's internal affairs.
The militants were trying to infiltrate through the Border Pillar No 157 in Kunsa and carry out a possible attack on the Kunsa Camp of Assam Rifles.
The Department of Management of AdtU inaugurated the new and upgraded programme of MBA in Healthcare Management last Tuesday on a grand scale.
Chief Minister Zoramthanga said that he would likely be meeting Assam Chief Minister Himanta Biswa Sarma by September.
The decision to denounce the agreement has been taken as it was allegedly signed without consulting the Executives of ATSUM and the federating units.
CM Sangma said that the Meghalaya Democratic Alliance government is committed to resolving the border dispute at the earliest.
The DRMC leaders have given an ultimatum till August 15 for the govt to respond, failing which, they threatened to launch the indefinite road blockade.
And not just this, the Assam delegation is also slated to meet Central YMA officials around 11:30 AM today.
The decision, to hold the rally, came after a joint consultative meeting of all seven tribal bodies and talk team held on June 28 at Tuensang Village.