Sources said M Logapathy was arrested by the agency from his office after he allegedly received the last installment of Rs 1.5 lakh as bribe from Singla to help him dodge Rs 10 crore of tax demand raised against him.
The agency which started a surveillance on taxmen from March when returns are filed in large numbers intercepted conversations of Logapathy and Hitesh Kumar, an advocate who acted as middleman in the deal.
It was only after confirming that an installment would be delivered to his office on April 15, the team carried out a search and seizure operation at CR Building of ITO where Logapathy's office is located.
The sources said the team disguised itself as assessees and staff of the I-T department to evade the security at the building and positioned themselves around the office.
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As soon as Kumar emerged from the office after handing over the alleged bribe amount, the agency teams swung into action and arrested the official with a portion of money received by him, the sources said.
The sources said documents related to a flat in upmarket Green Park locality in south Delhi, two shops in Karol Bagh, two houses in Puducherry and a house in Chennai were found during searches at the residence of Logapathy, an IRS officer of 2008 batch.
They said the agency has also recovered documents of bank lockers which are in the process of being opened even as the agency plans to start proceedings under disproportionate assets case against the officer.