Following a prolonged illness, the chief minister of Uttar Pradesh and veteran BJP leader Kalyan Singh passed away on Saturday night at the age of 89. Singh, who had been ailing for some time, breathed his last at the Sanjay Gandhi Post Graduate Institute of Medical Sciences (SGPGI) in Lucknow. Kalyan Singh had been admitted to SGPGI on July 4 in the Intensive Care Unit in critical condition. CM Yogi Adityanath had visited him at the hospital on Saturday. Watch this video.