Watch | PM Modi attacks Mamta Banerjee in Madarihat speech.

Prime Minister Narendra Modi on Thursday criticised West Bengal Chief Minister Mamta Banerjee over the Kolkata flyover mishap and said the incident was not an act of God', rather it was an act of 'fraud'. Modi, who was addressing a rally in West Bengal's Madarihat, said that instead of initiating better rescue operations and arranging medical facilities for the people stuck under the bridge, the Bengal Chief Minister played blame games and shifted the entire blame on Left parties. The Prime Minister cautioned the gathering and said that both the Left and the TMC cannot secure the future of West Bengal.