Delhi Chief Minister Arvind Kejriwal is likely to skip the Enforcement Directorate's (ED) summons in the excise policy case for the fourth time. The central agency issued the fourth summons to Mr Kejriwal last week, asking him to appear today. The Aam Aadmi Party (AAP) leader, sources said, is unlikely to do so as he is scheduled to visit Goa to meet party workers and take stock of the preparations for Lok Sabha polls.