He alleged the NSCN (I-M) was threatening the voters despite its collective leadership, during its recent visit to Delhi, announcing the outfit's non-involvement in the polls.
At least one person was killed and 10 were injured in poll-related violence last week in the state with the ruling Congress complaining of intimidation and threats by NSCN(I-M) cadres in Mokokchung and Zunheboto districts.
Both the Election Commission and the state government have asserted all measures were being taken to conduct a free and fair poll.
Adequate police and para-military would be deployed in the state to maintain order, they said, adding all Deputy Commissioners and Superintendents of Police had been directed to monitor the situation.
Official sources said 75 companies of para-military forces would soon be deployed in the state.