Prohibitory orders were imposed on Saturday in some areas in Moreh sub-division after unrest over the alleged shifting of an India-Myanmar border pillar well into the Indian territory.
Tengnoupal District Magistrate A Tombikanta ordered imposition of prohibitory orders under Section 144 of CrPC during the night hours for the next six months in some parts of the sub-division.
The orders prohibit assembly of five or more people from 7 pm to 4 am and carrying any weapon.
It was imposed after rising tension in the area over "shifting" of border pillar No 81 three kilometres inside Indian territory, officials said.
The move comes a day after a visit by the Manipur Revenue Minister Karam Shyam to the area where he said a high power committee on border pillars would submit a detailed report to the government on the contested pillar.
The border pillar was erected in 1969-70, the minister had said.
The residents of Kwatha Khunou had flagged the issue last month, alleging encroachment. Their claim was supported by several social bodies and political parties.