The 63-year-old has been put on ventilator after some of the vital organs stopped working, a doctor said.
His family members have rushed from Mumbai to be by his side at the Nayati Hospital.
Director of the hospital Shivani Sharma said he was extremely critical and that he has been put on life support system.
Born in New Delhi in 1955, Agarwal is a popular bhajan singer for his imitable style of singing. He settled down in Vrindavan for his love for Lord Krishna.
He has to his credit more than 1,500 live programmes across the country and has held shows in Singapore, Italy, Britain, Switzerland, France, Germany, Canada, Ireland and Dubai.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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