Bengal CM and Trinamool Congress chief Mamata Banerjee has filed her nomination papers for the Bengal assembly election, which she will contest from Nandigram. Mamata was greeted with 'Khela Hobe' chants as she walked through Nandigram to file her nomination papers. Amid all this, Suvendu Adhikari has launched a scathing attack on Mamata Banerjee. Suvendu Adhikari called Mamata Banerjee an opportunist.