Khan, now 65, had made national headlines in 2007 when news broke that he owed more than Rs 34,000 crore to the government in tax dues. The Income Tax department had assessed his income during the six-year period between 2001 and 2007 to over Rs 1.1 lakh crore, and tax liability of approximately Rs 34,000 crore. He has been accused of parking huge sums from this money in Swiss banks, using the hawala route.
Along with two cases under PMLA being probed by the ED, he is also facing a case by the Central Bureau of Investigation, wherein he has been named as a suspect, along with some government officials, for criminal conspiracy and corruption.