An official communication was sent to the HPC(D) leadership today, though verbal information was already given to the leaders of the outfit, state joint secretary for home Lalbiakzama told PTI.
The state government and the HPC-D had signed the SoO pact after holding first round of talks in Aizawl on January 31. The pact is due to expire on July 31.
Official sources said the second round of talks would be directed at extension of SoO the pact for another six months.
A section of dissatisfied cadres of Hmar People's Convention (HPC) formed HPC-D in 1995.
The outfit's demand was formation of a Hmar state consisting of the Hmar tribal people inhabited areas of Mizoram, Manipur and Assam.