Chatterjee, president of Left Front constituent Marxist Forward Bloc, was suffering from breathing trouble and had undergone treatment at a private hospital in Salt Lake for a month and was released from there on March 14, his son in-law Dibyojyoti Ghosh said.
"He complained of uneasiness this morning and was admitted to the same facility, where he died of a cardiac arrest at 10.15 am," Ghosh said.
The former minister, a widower, is survived by a daughter, Kuheli Ghosh.
"Condolences to his family and well wishers," Banerjee said in a tweet.
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