"We have committed in our manifesto that we will remove VIP culture from Nagaland. We will ensure that the citizens of the state are the real VIPs," Rio said after he took oath as Chief Minister for the fourth time.
"Our alliance has come to power on the back of a campaign that promised change," he said.
Promising good governance, rule of transparency and commitment to bring about a culture of meritocracy, Rio said: "We will redraw a new roadmap of progressive development in a manner that is all inclusive and involves all stakeholders."
The veteran Naga politician promised the Chief Ministers of Assam (Sarbananda Sonowal), Arunachal Pradesh (Pema Khandu), Manipur (N. Biren Singh) and Meghalaya (Conrad Sangma) the fullest cooperation of his government to work together under a spirit of unity and understanding in the greater interest of the people.
On the ongoing Naga peace dialogue, the Chief Minister said the alliance remained committed to its promise of facilitating the peace process.
"We will make every effort to contribute towards achievement of an honourable solution that is inclusive and acceptable to the people as early as possible.
He expressed hope that both the treasury and opposition would work together in a constructive manner in order to bring about economic growth and all round development.
While congratulating all ranks and files of the NDPP and BJP, he said: "Our campaign has remained dignified, responsible and mature and we can say with pride that we have strengthened the foundations of democracy with our conduct."
"We are humbled by our victory and the People's Democratic Alliance, which includes the JDU, the NPP and the Independent, promise that we will not allow any vote cast in our favour to go in vain.
"We will bring change, we will work for all sections and we will leave no one behind," the Chief Minister stated.
"We are honoured to have Union Defence Minister, Nirmala Sitharaman," Rio said, on the day, which was also celebrated as "International Women's Day" and added that his party "NDPP stands for women empowerment and gender equality".
The NDPP-BJP, which stitched a pre-poll alliance and contested in 40 and 20 assembly seats, respectively, formed the PDA after the election results were declared on March 3.
On Monday, the BJP announced it had severed its 15-year-old alliance with the NPF.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)