West Bengal Election 2021: EC rules out attack on CM Mamata Banerjee, calls it security lapse Injuries sustained by TMC chief was caused due to a lapse on part of security personnel in charge of the CM, the EC said in its report. (Image source: ANI) Updated: Mar 14, 2021, 06:12 PM IST The Election Commission of India on Sunday (March 14) ruled out an attack on West Bengal Chief Minister Mamata Banerjee during her rally at Nandigram. Injuries sustained by TMC chief was caused due to a lapse on part of security personnel in charge of the CM, the EC said in its report adding that there is no evidence of an attack carried out on the Mamata Banerjee.