Ahead of the Lok Sabha polls, search operations by income tax sleuths are continuing for the second day on Thursday at the premises of Trinamool Congress leader Swarup Biswas who is the brother of a West Bengal minister, an official said.

The raids, which began on Wednesday morning, are part of an investigation into alleged tax invasion by two real estate companies, he said.

"The search operations are underway for the second day," the I-T official said.

The raids are being carried out for alleged "tax evasion and possession of disproportionate assets by the TMC leader", he said.

"Sleuths of the Income Tax Department's investigation wing have been conducting the search operations at several locations related to Swarup Biswas in the city," he said.

Swarup Biswas is the brother of minister Aroop Biswas.

Biswas had alleged links with some real estate developers from where funds were transferred to his account violating income tax rules, the official added.

Except for the headline, this story has not been edited by The Telegraph Online staff and has been published from a syndicated feed.