The Income Tax department is scrutinising documents on individual bids and rate contracts submitted by contractors to the Organising Committee of the Common Wealth Games. The scruitiny is part of its probe to detect alleged financial irregularities.The department, after two rounds of searches on major consortiums and contractors, has collected documents through which the contracts were granted. But the needle of suspicion is on bids submitted by these contractors to the Games Organising Committee.Official sources said that the competence of these bids will establish the fact that if these contracts were worthy enough to be awarded by the Committee and other agencies to the consortiums and contractors.The I-T probe is specifically looking into the contracts awarded by the Games Organising Committee and the role of its officials and contractors including charges of bribing.Our correspondent reports that IT yesterday carried out simultaneous nationwide raids on 50 premises of four contractors who executed some Games related works on landscaping and beautification works of the Games venues. Earlier it carried out similar searches at 19 premises.