About 4-5 lakh HNIs and their businesses are being issued notices which will first seek their relevant financial details and subsequently establish the tax demand, if any, he said.
As the bitcoins or the virtual currencies (VCs) are illegal and unregulated in the country as of now, the IT department has taken action as per the existing provisions, they said.
The survey operations conducted last week, under section 133 A of the Income Tax Act, were undertaken for "gathering evidence for establishing the identity of investors and traders, the transaction undertaken by them, identity of counter-parties, related bank accounts used, among others," they said.