AK 47 rifles rained down in West Bengal and along with it came grenades, rocket launchers and bullets. Even after 2 decades Purulia arms drop case remains one of the most classified cases. It still troubles the top investigating agencies of India and even the most intelligent minds could not make sense and solve the case. How did it happen? Who was behind it? Purab searches for the answers in this episode of India classified Season 2.

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