The Enforcement Directorate (ED) has approached the Supreme Court alleging obstruction by the West Bengal government, including Chief Minister Mamata Banerjee, during its probe into the I-PAC coal scam. The ED claims evidence was removed and the investigation was impeded. The state government has filed a caveat in the Supreme Court, seeking to be heard. The matter is also pending before the Calcutta High Court, with hearings deferred. The ED seeks a CBI probe into the alleged obstruction.