Accusing the Income Tax department of being "very lenient" to the Board of Control for Cricket in India (BCCI), a Parliamentary panel said on Tuesday that it allowed the cricketing body to "enrich its coffers at the expense of the exchequer".

Headed by former finance minister and senior BJP leader Yashwant Sinha, the standing committee on finance has asked the IT department, Reserve Bank of India (RBI) and corporate affairs ministry to expedite their investigations into the affairs of the BCCI and the Indian Premier League (IPL).

The report of the committee, which was tabled in Parliament, also regretted that the much-loved cricket -- a gentleman's game -- is getting "sullied and embroiled in transgressions of law off the field".

The BCCI, which sponsored the IPL, has drawn strong criticism on account of allegations of economic and financial wrongdoings, violation of tax laws, prevention of money laundering act, company law and RBI regulations.

Noting that ITD has been very lenient in taxing BCCI, the committee said, the matters should be "thoroughly probed and an action taken report (be) furnished to the committee within one month".

It further said that all pending tax assessment case of BCCI should be finalised on the strength of the department's decision to withdraw exemption originally granted to the cricketing body.

Although the tax exemption granted to BCCI was withdrawn in December 2009 with retrospective effect from assessment year 2007-08, the ITD has not been able to complete scrutiny assessment for some years, the report said.