New Delhi, Aug 28 (TIWN) The CBI on Wednesday began cross-examination of Trinamool Congress MP K.D. Singh, Narada News Managing Director Mathew Samuel and others regarding the Narada sting operation which showed around a dozen leaders of the party including Ministers in West Bengal allegedly accepting bribes.

 A CBI source related to the investigation told IANS: "The agency has asked Singh to depose on Wednesday for cross-examination."