US trading firm Jane Street is not cooperating with the income tax authorities who are currently carrying out an investigation at their premises, a governmemnt official said. The Income Tax Department is probing Jane Street for alleged tax violations linked to the SEBI's market manipulation case.

Jane Street is limiting access to key financial documents and technology infrastructure needed for the inquiry, few media reports said. 

This comes a day after the Income Tax Department carried out a survey at Nuvama Wealth Management's premises on Thursday, Jane Street's Indian trading partner. Searches at Nuvama premises were also linked to the same case.  On Jul. 4, SEBI had banned four entities of Jane Street group from participating in the securities market over allegations of index manipulation and in an interim order, directed to impound INR 48.44 billion from the four entities.