The Enforcement Directorate has issued fresh summons to Delhi Chief Minister Arvind Kejriwal for questioning on March 21 in the excise policy linked money laundering case, official sources said Sunday. The 55-year-old national convenor of the Aam Aadmi Party (AAP) has been asked to depose at the central agency's office in central Delhi. The ninth summons have been issued so that Kejriwal's statement can be recorded under the Prevention of Money Laundering Act (PMLA), the sources said.