New Delhi , India ( CNN ) -- India 's federal police have arrested two senior officials involved in organizing last year 's troubled Commonwealth Games in New Delhi for suspected corruption . Investigators have taken into custody Lalit Bhanot , former secretary-general of the organizing committee of the October 2010 event . Also placed under arrest was V.K . Verma , director-general of the committee . They have been held for a suspected over-priced purchase of a timing , scoring and result systems from a Swiss company , federal police spokesman R. K. Gaur said . India 's Central Bureau of Investigation ( CBI ) , which is probing allegations of massive corruption in the conduct of the Commonwealth Games of last year in New Delhi , had earlier arrested four other committee officials . Bhanot and Verma are seen as close aides of Suresh Kalmadi , India 's chief organizer of the sporting event that attracted international headlines for alleged scams and messy preparations . A series of scandals in 2010 have put Prime Minister Manmohan Singh 's government on the defensive . This week , Singh acceded to opposition demands to order a cross-party probe into an alleged multi-billion dollar fraud related to the award of mobile-phone licenses three years ago . Politicians , bureaucrats , officials and company executives linked to probes have denied any wrongdoing . Several high-profile corporate leaders have also been questioned by police in connection with the sale of radiowaves in 2008 . Investigators have arrested A. Raja , who quit as telecom minister as the scandal battered Singh 's government . Singh reiterated Thursday that the guilty will be punished . `` No wrongdoer will escape penalties , '' he told lawmakers . `` As and when we got credible , actionable evidence , action has been taken . ''
NEW : Singh reiterates that those found guilty will be punished . Two other organizing committee members were arrested earlier . Authorities are investigating massive corruption in the organisation of the Games . A number of other incidents have put Prime Minister Vijay Singh on the defensive .