The CBI on Monday arrested former chief medical officer (CMO) of Lucknow A K Shukla in connection with the murder of his predecessors Vinod Arya and BP Singh in October 2010. Talking to mediapersons Samajwadi Party Spokesperson, Rajinder Choudhary said that the CBI sleuths should also probe the role of former state chief Mayawati and arrest her. Meanwhile, Ram Kumar Bhargava UPCC Chief Spokesperson slammed Mayawati for looting the central government's fund.