Bharatiya Janata Party leader Narayan Datt Tiwari passed away today at Delhi's Max Hospital in Saket. Today was his 93rd birthday. A former Congress veteran who served the party for five decades, Tiwari held a unique distinction of serving as the CM of two states. Tiwari was in the Intensive Care Unit (ICU) of the hospital since July. He was suffering from renal and old age problems. He passed away at 3 pm. Meanwhile, Prime Minister Narendra Modi has expressed grief over the demise of Tiwari. In a tweet he said: Saddened by the passing away of Shri ND Tiwari Ji. A towering leader, he was known for his administrative skills. He will be remembered for his efforts towards industrial growth & working for the progress of UP & Uttarakhand, a state he steered in its initial days. My condolences." Uttarakhand Chief Minister Trivendra Singh Rawat also expressed grief at the death of former CM and remembered him as a man who "made significant contribution to the industrialisation of both Uttar Pradesh and Uttarakhand". "ND Tiwari dedicated his entire life to the service of the nation both during the country's freedom struggle and after it attained independence. He was a Union minister and held charge of key portfolios like finance and external affairs," Rawat said. Tiwari had served as the CM of Uttar Pradesh thrice 1976-77, 1984-84 and 1988-89. He had also served as the third chief minister of Uttarakhand for a full five-year term between 2002 and 2007. After his stint as the CM of Uttarakhand ended in March 2007, then Congress-led UPA government had appointed him as the Governor of Andhra Pradesh. Her remained in the office there till 2009. Narayan Datt Tiwari was born on October 18, 1925. He was formerly in Praja Socialist Party and later joined the Congress. In January 2017, he along with his son Rohit Shekhar Tiwari joined the Bharatiya Janata party.