The Central Bureau of Investigation (CBI) took the step against Principal Commissioner Tapas Kumar Dutta, posted in Ranchi, and three of his colleagues following allegations of criminal conspiracy.
They were accused of favouring private persons and companies in the matter of taxes and for taking illegal gratification.
The CBI raids took place at 18 residential and office premises of the accused in Kolkata and five places in Ranchi in Jharkhand, a CBI official said.
The CBI officers questioned Mr Dutta at the IT office in Ranchi. Sources said the raids were related to hawala transactions.
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