The CBI today carried out searches at 11 premises, including residences of four aides of CWG Organising Committee Suresh Kalmadi, in connection with alleged irregularities in a Rs 107 crore contract for the Games result update system and registered cases against them.

Official sources said the CBI has registered an FIR in relation to a deal struck with a Swiss firm for results update system for the Commonwealth Games.

CBI conducted searches at the residences of OC Secretary General Lalit Bhanot, Director General V K Verma, R K Sacheti, Joint Director General (Coordination) and Sangeeta Welingkar, member of the Games Image and Look Group.

The searches were carried out in Gurgaon, Noida and the national capital including at the OC headquarters, the sources said.

This is the third FIR in connection with alleged irregularities in CWG projects. The CBI had earlier registered two FIRs in connection with alleged irregularities in Queen's Baton Relay held in London last year and had arrested three former Games officials.

This is the first time that premises of both Bhanot and Verma, both considered close to Kalmadi, were searched.

While Verma has been questioned by the Enforcement Directorate a couple of times, Bhanot was also on their radar, the sources said.