The Enforcement Directorate (ED) has issued fresh summons to TMC MP Abhishek Banerjee and his wife for questioning in a money laundering case linked to an alleged coal scam in West Bengal, officials said on Thursday. Abhishek, nephew of West Bengal Chief Minister Mamata Banerjee and his wife Rujira Banerjee have been asked to depose before the investigation officer here next week. The Delhi High Court had on March 11 dismissed a plea by the couple challenging the summons that asked them to appear before the ED.