"The cabinet had sent the list of portfolios to Raj Bhavan and Governor Ganga Prasad approved it," the senior official told PTI.
Conrad, son of former Lok Sabha Speaker and Union minister late P A Sangma, is currently a Lok Sabha member from Tura, and is heading a 12-member Cabinet.
The National People’s Party-led five-party coalition has been named the Meghalaya Democratic Alliance (MDA).
"I am a little emotional. It was a dream of his late father Purno A Sangma to see his son rise to this level. God is kind," she told PTI.
The ceremony was attended by Union Home Minister Rajnath Singh and BJP chief Amit Shah. Manipur chief minister N Biren Singh and BJP national spokesperson Nalin Kohli were also present.
National People's Party (NPP) chief Conrad Sangma took the oath as chief minister of Meghalaya today along with 11 party leaders. The ceremony was attended by BJP national president Amit Shah and Union Home Minister Rajnath Singh.
BJP president Amit Shah and Home Minister Rajnath Singh are set to attend the oath-taking ceremony. NPP leaders said Conrad and 11 ministers will be sworn in today.
With Meghalaya slipping from the clutch of Congress, the grand-old party now remains in power only in three other states, including Karnataka where elections are slated next month, and Puducherry.
The Congress put all its might in Meghalaya pre- and post-elections, and rushed its bigwigs — Ahmed Patel, Kamal Nath, C P Joshi and Mukul Wasnik — to Shillong and staked claim Saturday midnight.
Meghalaya election results: Led by Conrad Sangma’s NPP, the BJP brought together regional parties UDP, HSPDP and the PDF and met the Governor to stake claim to form the next government, claiming the support of 34 MLAs in the 60-member House.
Of the 10 seats the party could retain this time, the party witnessed a decrease in victory margin in four — Umroi, Nongpoh, Rangsakona and Ampati. It recorded a rise in victory margin in East Shillong, Mawsynram, Ranikor, Selsella, Mahendraganj and Salmanpara.
National People's Party's Conrad Sangma met Meghalaya governor Ganga Prasad on Sunday to stake claim to form the new government in Meghalaya. BJP's northeast strategist Himanta Biswa Sarma who arrived in support of Sangma said that Sangma will be the next CM of Meghalaya
Meghalaya Election Results 2018: The Congress has rushed senior leaders Ahmed Patel, Kamal Nath, Mukul Wasnik, and AICC general secretary in charge of the Northeast C P Joshi to Shillong to explore the possibility of forming the government.
Facing a similar situation, the BJP has asked Assam minister Himanta Biswa Sarma to rush to Meghalaya for holding talks with smaller parties and Independents. The Congress has also rushed senior leaders Ahmed Patel and Kamal Nath to Shillong.
Meghalaya election results 2018, full list of winners: Meghalaya chief minister and Congress candidate Mukul Sangma won from both Ampati and Songsak constituencies.
"We are seeing a revolutionary verdict. It is a historic verdict," said Ram Madhav.
The polls in Meghalaya was held on February 27, which registered 75 per cent polling. The ruling Congress in its previous campaign in 2013 had booked 29 seats restricting BJP from opening their account in the state. The party has been in power in Meghalaya for 10 years.
Here are the LIVE UPDATES on Meghalaya Assembly Election Results 2018: The BJP has sent its key Northeast strategist Himanta Biswa Sarma to Shillong. The Congress, on its part, rushed senior leaders Ahmed Patel, Kamal Nath.
Meghalaya election result 2018: The election in the north eastern state is crucial for the BJP which is campaigning intensely to make way in the north east.
Election was countermanded in Williamnagar constituency following the death of NCP candidate Jonathone N Sangma in a militant attack on February 18.