India, Jan. 9 -- Around Rs.20 crore proceeds of a coal mining racket's crime were transferred through hawala channels to the political consultancy firm I-PAC, the Enforcement Directorate (ED) has said, and sought a Central Bureau of Investigation (CBI) probe against West Bengal chief minister Mamata Banerjee, state police officers, and others for obstructing its raid linked to it on Thursday.

In its writ petition filed before the Calcutta high court, the ED accused Banerjee of intimidating its officers, forcibly taking away evidence, and hijacking the witnesses, who accompanied the agency's team for the raid. HT has reviewed a copy of ED's petition.

The ED searched the I-PAC office, the residence of its director, Pratik Jain, in Kolkata...