The Kerala High Court on Thursday stayed a November 24 interim order of a single-judge which had allowed the Enforcement Directorate (ED) to issue fresh summons to former State Finance Minister Dr. Thomas Isaac and officials of the Kerala Infrastructure Investment Fund Board (KIIFB) in connection with its probe into the financial transactions of KIFFB [Kerala Infrastructure Investment Fund Board v Director, Directorate of Enforcement] [Dr. TM Thomas Isaac v The Deputy Director].