West Bengal Chief Minister Mamata Banerjee held a candle light march in Bardhaman on April 11 over the poll violence in Cooch Behar during the fourth phase of assembly elections on April 10. She was accompanied by TMC leaders and party workers. Huge crowd gathered to welcome her. Violence erupted at a polling booth in Sitalkuchi in Cooch Behar during the fourth round of assembly elections on Saturday. Central Forces opened fire to stop a mob in which four persons were killed. CM Banerjee termed killing of persons in Cooch Behar during the assembly polls as 'genocide.' Prime Minister Narendra Modi also expressed his sadness over the incident. He urged EC to strongly deal with those responsible for what happened in Cooch Behar. The next phase of the elections will take place on April 17.