The apex court said a group of investigators headed by senior IPS officer BB Mishra will assist the Mudgal panel in the probe. It also said Sunil Gavaskar and Shivlal Yadav will continue to do their job as interim BCCI presidents till further orders.
The SC had on March 28 appointed Test great Gavaskar as temporary president of the Board of Control of Cricket in India for the duration of the Twenty20 competition in place of N Srinivasan.
An apex court bench headed by justice AK Patnaik had said Gavaskar would only be concerned with matters related to the seventh edition of the IPL.
Several players were arrested last year, including test paceman Shantakumaran Sreesanth, for allegedly spot fixing - or conceding a specified number of runs in exchange for money from bookmakers.
The court did not penalise any teams or players as part of the judgment.
Srinivasan's position on the BCCI has been considered untenable since a three-member committee, headed by Justice Mukul Mudgal, found Chennai Super Kings team principal Meiyappan guilty of being in contact with illegal bookmakers in its report forwarded to the SC.
Srinivasan said that Meiyappan was "just a cricket enthusiast" even though he was seen regularly at players' auctions and in the team dugout.