New Delhi: Rejecting the need to call CBI public prosecutor AK Singh and Unitech MD Sanjay Chandra, who allegedly colluded in the 2G case, JPC chief PC Chacko said, 'No need to call the persons who allegedly colluded. We have called the concerned persons. We cannot call everyone. The JPC has questioned the secretaries of the concerned ministries. We had questioned the CBI director today.'
