NEW DELHI (TIP): Former Union Railway Minister Pawan Kumar Bansal, whose nephew Vijay Singla and nine others have been chargesheeted by the CBI in the Rs 10 crore cash-for-post bribery case, has been named as a prosecution witness. The CBI chargesheet filed in a special court some days back mentioned that Bansal would be a prosecution witness, a source said. Now that he has been made a prosecution witness, it is understood that he has been given a clean chit. He was questioned only once at Jam Nagar House while the other accused were grilled at the CBI headquarters. The agency has also named Railway Board exchairman Vinay Mittal, joint secretary (confidential) P Rajeshkaran and joint director Vigilance (Int) R Vijayan Nair as witnesses. The agency had registered the case on May 3 and arrested Mahesh Kumar, Vijay Singla and other middlemen. In its FIR, the CBI has alleged middleman Sandeep Goyal had promised Kumar that he would arrange the post of Member (Electrical) in the Railway Board for him and allegedly demanded Rs 10 crore for it.