A local court on Wednesday sentenced five persons to life imprisonment for kidnapping a well-known doctor in 2006. Dr Jaideep Sarkar was kidnapped on January 21, 2006, while returning from his clinic in Aliganj. The kidnappers had demanded Rs 5 crore from his family. The doctor was, however, rescued by police from Malihabad area a day later. The court acquitted four persons — Romil Srivatava, Mohammad Shahid, Sarvesh Gupta and Jagjeevan for want of evidence. Those convicted include R K Bhatnagar, Raseed Khan, Naved Khan, Praveen and Ram Sajeevan.