Manipur celebrates today the 66th Republic Day of the country amidst tight security in view of the boycott call against the celebration by the militant organizations. The main function was organised at the historic Kangla Fort in Imphal. tate Chief Minister Okram Ibobi Singh unfurled the tricolor and took salute of a colorful march past parade. Republic Day is also celebrated at all the district and sub-divisional headquarters of the state.