Mumbai, June 22 -- Former Odisha Chief Minister Naveen Patnaik underwent a "successful" spine surgery at the Kokilaben Dhirubhai Ambani Hospital and Medical Research Institute in Mumbai on Sunday.

According to his personal physician, Dr Ramakanta Panda, the procedure lasted nearly four hours.

Providing a post-surgery update, Dr Panda stated, "I am Ramakanta Panda, personal physician of Naveen Patnaik. I worked with the heads of the heart surgery and anaesthesia departments. All of us were present in the operating theatre. The surgery was successful."

Dr Panda added that Patnaik is currently under observation and has been responding well after the procedure.

"He is conscious and has been speaking to everyone. He will be kept in the hos...