Answer: Bankipur jail
Notes: Dr. Rajendra Prasad was imprisoned in Bankipur jail. The Bankipur Central Jail was a colonial prison located in Patna(Bihar). Many notable dissidents such as Rajendra Prasad, Mulana Mazharul Haque, J.B. Kriplani, among others, were imprisoned here during the struggle for India's Independence. The autobiography of Rajendra Prasad, "Atmakatha" was written during his 3 year prison term in Bankipur jail.
