Former Chief Minister of Uttar Pradesh and Uttarakhand, Narayan Dutt Tiwari, passed away in New Delhi on Thursday after a prolonged illness. He was 93. <br />''<br />''He breathed his last at a private hospital.   <br />''<br />''Narayan Dutt Tiwari served thrice as the Chief Minister of Uttar Pradesh and once Chief Minister of Uttarakhand. <br />''He also served as Union Minister for External Affairs, Finance, Petroleum and Commerce and Industry. He also served as the Governor of Andhra Pradesh. <br />''<br />''<br />''President Ram Nath Kovind, Prime Minister Narendra Modi, Vice President M Venkaiah Naidu have expressed grief over the demise of ND Tiwari. <br />''<br />''<br />''In a tweet, Mr Kovind said, as Chief Minister of Uttar Pradesh and later Uttarakhand, he contributed much to the development and public welfare. <br />''<br />''<br />''The Vice President has also condoled the death of the veteran leader.<br />''<br />''<br />''In a tweet, Mr Modi said, ND Tiwari was a towering leader and was known for his administrative skills. <br />''<br />''<br />''He said that the departed leader will be remembered for his efforts towards industrial growth and working for the progress of Uttar Pradesh and Uttarakhand, a state he steered in its initial days.<br />''<br />''<br />''In his message, BJP President Amit Shah said, the demise of ND tiwari is an irreparable loss for Indian politics.<br />''<br />''<br />''Uttarakhand Chief Minister Trivendra Singh Rawat has also expressed grief over his death.