The Trinamool Congress (TMC) on Friday launched a blistering attack on the Election Commission of India (ECI), accusing Chief Election Commissioner Gyanesh Kumar of having "blood on his hands" for the deaths of Booth Level Officers (BLOs) in West Bengal and alleging that the ongoing Special Intensive Revision (SIR) of electoral rolls is a targeted BJP-orchestrated conspiracy to disenfranchise Bengali and minority voters in West Bengal.