A delegation of the Bharatiya Janata Party s (BJP) West Bengal unit on Thursday morning approached the Election Commission over the alleged attack on Chief minister Mamata Banerjee in Nandigram last evening. The party has demanded from the state s Chief Electoral Officer to order a probe into the incident and release the video of the incident. The saffron party said that Mamata Banerjee enjoys a robust category security and any breach in the security of a Chief Minister is a matter of