Renowned spiritual leader Kalki Bhagwan (77) passed away. He breathed his last at 3 pm on Tuesday. He had been undergoing treatment at a private hospital in Chennai for the past ten days due to a serious illness and died due to failure of treatment, a trust spokesperson said in a statement. His body will be kept at the Ekam temple in Tirupati for viewing from today afternoon and the last rites will be performed on Saturday.