West Bengal saw sporadic violence as people in seven states and one Union Territory voted in the final of the seven-phase national election today. North Kolkata's BJP candidate Rahul Sinha said he was attacked by a group of men. "A BJP worker and a cameraman was injured," he said. An explosion was also reported from a polling booth in Islampur where assembly by-election is being held. BJP and Trinamool Congress workers had clashed in the eastern state earlier this week, following which the Election Commission cut short electoral campaigning amid protests by opposition parties. Among the main contestants in this phase of the election is Prime Minister Narendra Modi, who is contesting from Varanasi.