These brokers are Mr Nirmal Bang, Mr Radhakrishan S Damani, Mr Ketan Parekh, Mr Anand Rathi, Mr Rakesh Jhun Jhunwala and Mr Shankar Sharma of First Global.

According to CBDT, in one case, document indicating undisclosed transaction worth Rs 15 crore was seized. These documents are under investigation to arrive at the exact quantum of undisclosed income.

The press release further said lockers located in four of the cases have been kept under prohibitory order and would be opened in due course to ascertain the disclosed/undisclosed income.

The material discovered during the search operation include substantial quantity of gold and jewellery, share certificates running into several crores as well as evidence of share transactions running into thousands of crores.

The directorate of investigation, Mumbai, has also confirmed that there was a clear linkage of the material discovered with an attempt to avoid disclosing of income. The directorate has also discovered evidence of fictitious purchase and sale of shares resulting in trading-in of profits/losses.