Business tycoon Vijay Mallya, owner of the Royal Challenger Bangalore IPL team, has said he "knows nothing" about his step daughter Laila Mahmood being the "mystery woman" who exited IPL chief Lalit Modi's office in Mumbai just before the Income Tax officials visited it for a probe on Thursday.

The income tax (IT) department, which is probing the Indian Premier League's (IPL) financial transactions covering all the franchises amidst allegations of murky deals, is reported to have questioned Mallya's daughter who works for Modi.