Enforcement Directorate (ED) has asked the regional passport office to revoke will-full defaulter Vijay Mallya's passport. ED is one of the various agencies that is probing Vijay Mallya's case. ED wanted to revoke his passport earlier itself, to stop him from leaving the country. But it failed and Mallya left India just hours before the case came up for hearing in the court. He has been served several notices, but he has refused to return, seeking more time.