Biswas suffered a brain stroke following a bypass surgery, after which his health conditioned worsened. Former West Bengal minister and senior Trinamool Congress (TMC) leader Ujjal Biswas passed away at the age of 72 on Wednesday, November. Kolkata, Nov 11 (PTI): Former West Bengal minister and senior TMC leader Ujjal Biswas died at a private hospital here on Wednesday after battling multiple health complications for nearly three.