The Verma Commission, probing the security lapse, held two officials responsible. Former IB chief M.K. Narayanan, and former home secretary R.K. Bhargava. When the infighting in the Congress became particularly virulent, with Sonia loyalists demanding a quick end to the ongoing probe, a subcommittee headed by Arjun Singh recommended action against four more ex-bureaucrats: Shiromani Sharma, home secretary for three months in 1989-90, former cabinet secretary Vinod Pandey, G.S. Vajpayee and R.P. Joshi, former secretary (security) and IB chief respectively. Naresh Chandra, cabinet secretary at the time of the killing, was left out.