The Income Tax department is scrutinising documents of individual bids and the rates submitted by contractors to the Common Wealth Games Organising Committee. Official sources said, this may lead to filing of cases of tax evasion, if the contractors were found to have wrongly invoiced their works. Sources said that the department, after two rounds of searches on major consortiums and contractors collected incriminating documents including those on contracts for the works. The needle of the suspicion is on bids by these contractors to the Games Organising Committee.The prime objective of the Income Tax Department is to establish whether these contracts could have been given by the Committee and other agencies to the consortiums and contractors. Possibility of bribes by the contractors and the officials of organizing committee is also focus of investigations. Income Tax department carried out simultaneous nationwide raids on 50 premises of four contractors yesterday. Similar searches were held at 19 other premises. IT department will share the seized documents with Enforcement Directorate and other agencies to streamline the probe earlier. It is expected that a coordinated multi agency probe will bring out the rot in open with the Sanhgloo Committee having wide mandate and enough powers to carry out the investigations on fast track.In a related development, CBI has started probe against alleged irregularities in the distribution of Common Wealth Games complimentary tickets of twenty thousand rupees each for the closing ceremony. Meanwhile, Delhi Chief Minister Shiela Dikshit says that her government is ready for any probe in Common Wealth Games spending.