The sporting extravaganza in October, which cost up to $6 billion, was dogged by several cases of alleged corruption, including the purchase of equipment and issuing contracts. The anti-corruption watchdog has identified more than 16 projects with possible irregularities.
The ruling Congress party sacked Suresh Kalmadi, chairman of the organising committee, as secretary of the Congress party's parliamentary wing. Three of his close aides have been arrested and local media has said Kalmadi could be arrested once he returns from a foreign trip.
The allegations include manipulations of tenders in the building of stadia and other games infrastructure, and inflating bills for equipment such as treadmills and toilet paper rolls.
Several bodies, including the anti-corruption watchdog, the state auditor, the CBI and a special committee set up by Prime Minister Singh, are probing the allegations.