Central Bureau of Investigation (CBI) is questioning Peter Mukerjea, charged with criminal conspiracy and murder in the killing of his stepdaughter Sheena Bora.<br/><br/>AIR correspondent quoting sources reports Mr Mukherjea is being interrogated at the agency's headquarters in New Delhi. <br/><br/>Peter's remanded in CBI custody has been extended till November 26. The CBI arrested and charged Peter in the case after a conversation recorded by Rahul Mukerjea, his son from an earlier marriage, led the investigating agency to believe that Peter had been withholding information.