Choudhury, who had been elected from the seat five times since 1977, had been suffering from cardiac and old age-related ailments and intermittently admitted to hospital for past six months, his family said.
Choudhury (77) left behind two sons and a daughter.
A pioneering member of the cooperative movement in the district, he was the three-time Chairman of Central Cooperative Bank of the district.
"We will miss his guidance in the present economic crisis situation," a bank member said.
Leaders of different political parties condoled the death of Chowdhury and placed wreaths as the body was kept in party office.
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