AINRC leader N Rangasamy took oath as the Chief Minister of Puducherry on Friday at a brief ceremony held at Raj Nivas.
Rangasamy became the CM of Puducherry for the fourth time and will lead the AINRC-BJP coalition.
He took the oath in Tamil and in the name of God.
He heads the NDA government which comprises AINRC and the Bharatiya Janata Party.
The swearing-in of the other ministers belonging to the AINRC and BJP would be held in next few days, AINRC party sources said.
Earlier, Chief Secretary Ashwin Kumar read out the Presidential notification appointing Rangasamy as the Chief Minister.