Widespread violence marred Phase 4 of the West Bengal elections in the Cooch Behar district, with the Sitalkuchi constituency turning battleground. Four people lost their lives in firing by CISF personnel in Sitalkuchi on April 10. Now political parties are fighting over Cooch Behar Violence. TMC has moved the Election Commission, demanding legal action against BJP's Dilip Ghosh over his remark. Why Cooch Behar turns into a battleground, Watch Shankhnaad.