India, Sept. 11 -- NEW DELHI Pramod Kumar Mishra was appointed Principal secretary to Prime Minister Narendra Modi on Wednesday, making him the most powerful bureaucrat in the country (and also the Prime Minister's Office), and giving a final shape of the contours of the PMO in the second Modi government.

Mishra was the additional principal secretary in the first Modi government and continued in that post after the Bharatiya Janata Party's return to power. In June, he was given the rank of a cabinet minister.

Also on Wednesday, former cabinet secretary P K Sinha was appointed Principal Advisor to the PM; he was last month named an Officer on Special Duty at the PMO.

Mishra replaces Nripendra Misra who served as Principal Secretary to Mod...