Common Wealth Games Scam
It is estimated that out of ₹70000 crores spent on the Games, only half of the said amount was spent on Indian sportspersons. The Central Vigilance Commission, involved in probing the alleged corruption in various Commonwealth Games-related projects, has found discrepancies in tenders – like payment to non-existent parties, willful delays in execution of contracts, over-inflated price, and bungling in purchase of equipment through tendering – and misappropriation of funds.
Source: https://yourstory.com/2017/12/8-scams-india
Source: Wikipedia: https://en.wikipedia.org/wiki/List_of_scandals_in_India