The bench was also critical of the probe agency for not being able to examine key witnesses in the four NRHM cases so far and made it clear that the accused may be granted bail by the trial court if CBI defaulted in examining witnesses.
"Incarceration cannot go on for forever. It is unacceptable. You (CBI) give us the time-frame by which you would examine the witnesses otherwise we will grant them bail," the bench observed at the outset.
The bench, comprising Justices T S Thakur and P C Pant, asked the CBI to produce the key witnesses before the trial court for recording of statements and said that pendency of applications filed by some of the accused seeking alteration of charges will come in the way of trial.
The apex court, which further asked the accused including Kushwaha not to delay the trial court proceedings, also directed the CBI not to add many witnesses as "vital" in the list of persons to be examined by it.