Kalyan Singh was visited by a host of BJP leaders at the hospital
Former Uttar Pradesh Chief Minister Kalyan Singh was admitted to the intensive care unit of the Sanjay Gandhi Post Graduate Institute of Medical Sciences in Lucknow on Sunday, according to an official statement.
"On his arrival here, his blood pressure and heartbeat were found normal, but the level of consciousness was a bit low. Keeping in mind his earlier ailments, he has been admitted to the ICU of the CCM," read a statement from the hospital.
A panel of experts - from the nephrology, cardiology, neurology, endocrinology and neuro-otology departments - has been formed to attend to Mr Singh, who has also served as Rajasthan Governor.
Prime Minister Narendra Modi telephoned Kalyan Singh's son Rajveer and enquired about the health of his father.
The PM also called up Chief Minister Yogi Adityanath to ensure that best possible medical care is made available to Kalyan Singh.
The veteran BJP leader has been unwell for the past two weeks, said the hospital.
Earlier, the 89-year-old leader was admitted to Dr Ram Manohar Lohia Institute of Medical Sciences.
Defence Minister Rajnath Singh, Uttar Pradesh Chief Minister Yogi Adityanath, his deputy Keshav Prasad Maurya and UP BJP chief Swatantra Dev Singh visited Dr Ram Manohar Lohia hospital and enquired about the well being of Kalyan Singh.