The Income Tax department on Friday carried out raids at the premises of PSK Engineering Construction and Co in Namakkal district.
Officials from the IT department had received information about the presence of unaccounted cash, sources said.
Searches are also being conducted at the premises of Akash Baskaran and Sujai Reddy in the cities of Chennai and Tirunelveli, respectively.
The IT raids across Tamil Nadu come less than a week before the state will go to polls on April 18.
Further details are awaited.
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