Search operations conducted by the Income Tax department at the premises of Swarup Biswas, brother of West Bengal minister Aroop Biswas, concluded on Saturday, officials said.
The search operations, which started on Wednesday, lasted for more than 70 hours. It took place at various premises of Mr. Biswas across Kolkata.
The I-T department has accused Mr. Biswas, a TMC leader, of tax evasion and possession of assets disproportionate to his known sources of income.