"Congratulations to T R Zeliang on taking oath as Nagaland CM. My best wishes and support in Nagaland's development journey," he tweeted.
Zeliang's party Naga People's Front is a member of the BJP-led National Democratic Alliance (NDA).
The NDF-led ruling Democratic Alliance of Nagaland (DAN-III) government was formed in March 2013. Rio demitted office yesterday after being chief minister for over 11 years following his victory in the recent Lok Sabha polls.
