Kolkata : The Bharatiya Janata Party (BJP) office in Kolkata was attacked by Trinamool Congress (TMC) students’ wing today following the party MP Sudip Bandyopadhyay’s arrest in connection with Rose Valley chit-fund scam by the Central Bureau of Investigation (CBI) for interrogation. A furious West Bengal Chief Minister Mamata Banerjee on Tuesday alleged that the arrest of the TMC MP was a ploy by the BJP-led Centre facing opposition post demonetisation. She further said she would fight the battle legally and seek justice from the court.