The Kerala Crime Branch is investigating former Public Service Commission chairman MK Sakeer over alleged irregularities and fraudulent appointments. Thiruvananthapuram: The investigation into the alleged irregularities in Public Service Commission (PSC) examinations has now turned towards former chairman and CPM leader MK Sakeer. The examinations that form the basis of the two fresh cases registered by the Crime Branch's Special Investigation Team (SIT) were conducted during Sakeer's tenure.