The Enforcement Directorate on Thursday conducted fresh searches against Chennai-based 'lottery king' Santiago Martin, the single biggest donor to political parties with over Rs 1,300 crore in electoral bonds, as part of a money laundering investigation, official sources said. The action comes after the Madras High Court recently allowed the ED to proceed against Martin as the Tamil Nadu Police had decided to close the predicate or primary FIR against him and a few others and a lower court accepted this police plea. Sources said multiple premises linked to Martin were being searched on Thursday in Chennai and some other places. The federal agency last year attached assets worth about Rs 457 crore in a case against Martin linked to an alleged loss of over Rs 900 crore to the Sikkim government by fraudulent sale of the state lottery in Kerala. Future Gaming Solutions India Pvt. Ltd. is the master distributor of Sikkim lotteries and the ED has been investigating Martin, known as the .