09
Jun
Kolkata (Gurpreet Singh): The Criminal Investigation Department (CID) on Tuesday entered the Trinamool Congress (TMC) headquarters-cum-residence of party supremo Mamata Banerjee in Kolkata's Kalighat area as part of its investigation into the alleged forging of signatures of party MLAs, a controversy that has plunged the ruling party into its most serious internal crisis since its formation.The CID team, accompanied by personnel from Kalighat Police Station and a large contingent of women police officers, arrived at the party's central office at 30B Harish Chatterjee Street during the afternoon. Their arrival initially led to a brief standoff with security personnel and party…