A doctor was gunned down allegedly by three bike-borne assailants, including his brother-in law, over an old enmity in Kakod town of the district on July 13, police said.

Dr Mukesh was examining a patient in the morning when the assailants came and fired bullets at him, SP (city) Praveen Ranjan said. He was rushed to a Noida hospital where doctors declared him brought dead. An FIR has been lodged by the deceased's wife Manju, naming three persons, police said.