India last month reacted angrily to Nepal showing the three areas as Nepalese territory in the new map and cautioned the country that saying such "artificial enlargement" of territorial claims will not be acceptable to it. India has been maintaining that these three areas belong to it.
President Bidya Devi Bhandari administered the oath of office and secrecy to Oli, 69, at a ceremony at Shital Niwas, after he was reappointed to the post on Thursday night as the Opposition parties failed to secure majority seats in Parliament to form a new government.
Prime Minister Oli secured 93 votes in the lower house of parliament during a special session convened on the directives of President Bidya Devi Bhandari.