BJP today criticised Congress Vice President Rahul Gandhi for his visit to the site of the flyover collapse in Kolkata calling it a photo-op. The party asked Mr. Gandhi to explain his stand on the award of contract for building the flyover to an alleged blacklisted firm by the then CPI(M) government in West Bengal, questioning if the alliance between Congress and the Left there is based on the foundation of corruption. BJP Secretary Sidharth Nath Singh took a dig at Mr Gandhi saying photo-ops are the lifeline of his politics. Mr. Singh also claimed that BJP took a conscious decision that its Union Ministers, who were in the state for electioneering, will not go to the spot so as to avoid hampering rescue operation.