Tingkhatra's condition was stated to be critical and was kept on life-support system in the ICU ward of the hospital, they said adding, he was reportedly in a coma after a massive heart attack causing brain hemorrhage.
Tingkhatra, who had contested the April 9 Assembly elections from Kanubari constituency in Longding district on a Congress ticket, was previously admitted at Aditya Hospital in Dibrugarh (Assam) for treatment, but was referred to Medanta Hospital, the sources added.