"On the special occasion of their Statehood Day, greetings to the people of Meghalaya. People from Meghalaya have made a notable contribution to our country. I pray for the state's continuous progress," Modi said in a series of tweets.

Highlighting the natural beauty of Manipur, Modi said: "Manipur is blessed with immense natural beauty and hardworking citizens. I can never forget the affection I have got in the state. On their Statehood Day, I greet my sisters and brothers of Manipur. May the state continue scaling new heights of development."

Hailing the Tripura's achievements in the last one year, Modi said: "Statehood Day greetings to the people of Tripura. In less than a year, the state has made remarkable progress. It is realising it's true potential and people's aspirations are being fulfilled at a record pace. May this spirit grow further in the coming years."

The erstwhile princely states of Tripura and Manipur were merged with India in 1949 and became full-fledged states in 1972.

Meghalaya was a part of Assam before it was carved out as a full-fledged state under the North Eastern Region (Re-Organisation) Act, 1971.