The Enforcement Directorate (ED) has approached the Supreme Court seeking a Central Bureau of Investigation (CBI) probe into 17 alleged offences connected to the January 8 raids at premises linked to Trinamool Congress (TMC) IT head and political consultancy firm I-PAC director Prateek Jain. The central agency has accused the West Bengal government, including Chief Minister Mamata Banerjee and senior police officials, of obstructing its investigation, tampering with evidence and threatening ED officers during the operation.