WITH the Bofors investigations in full swing, the role of the Bachchan brothers—Amitabh and Ajitabh—has once again become a matter of intense speculation among CBI officials. Not even the fact that the duo actually managed to get a certificate from Bofors to the effect that they were not recipients of kickbacks has deterred some officials from saying that at least one of the two brothers, Ajitabh, could throw light on the deal.