The income-tax department is said to have engaged the services of forensic experts from three of the Big Four accounting firms to investigate suspected money laundering by politicians, bureaucrats and businessmen.
Experts from EY, KPMG and PricewaterhouseCoopers are said to be working with tax officials to examine the evidence collected by the department during raids conducted since November 8, when the government declared war on black money by demonetisingRs 500 and Rs 1,000 currency notes.