New Delhi, April 22 -- It isn't just the political parties that have been busy in West Bengal over the past month, in the run-up to the assembly elections in the state (the first phase of the two-phase election is on Thursday); federal investigating agency Enforcement Directorate (ED) has been in the thick of action too, conducting high-profile raids, carrying out arrests, attaching properties, and filing charge sheets. In the past month alone, according to details compiled by HT, the agency has mounted over a dozen operations, with officials in ED terming the crackdown crucial to unearth financial irregularities. An ED officer, who didn't want to be named, said "all of its action is in ongoing probes and has been taken by following due process". However, the ruling Trinamool Congress (TMC) in the state has said that the Bharatiya Janata Party (BJP) has weaponised investigative agencies ahead of the assembly elections. ED's most prominent action has been against the Indian-Political Action Committee or I-PAC , first raided on April 2 in a fresh case related to its unaccounted funding; this was followed by the arrest of its director Vinesh Chandel on April 13. The agency has alleged that it has detected proceeds of crime worth Rs.50 crore linked to I-PAC so far. The federal agency issued summons last week to another I-PAC director Pratik Jain's wife, Barbie, and brother Pulkit. On April 14, the agency also attached assets worth Rs.159 crore in its separate probe related to the alleged coal mining in West Bengal, an investigation in which I-PAC was raided in January this year. I-PAC works with the TMC and the latter has claimed that a conspiracy was being orchestrated by the BJP to cripple its campaign through intimidation. On April 19, the agency raided the residence of Kolkata police Deputy Commissioner of Police (DCP), Shantanu Sinha Biswas, and businessman, Joy Kamdar (managing director of Sun Enterprise) in a money laundering case....