India, Nov. 7 -- More than 800 flights were delayed and some cancelled at the Delhi airport on Friday after a technical issue in the air traffic control system. The system is "up and functional now", according to the Airports Authority of India.

The state-owned AAI said the issue was detected in the IP-based Automatic Message Switching System (AMSS) of the ATC on November 6.

The airport authority further stated that there might still be some delays in the normal functioning of airport and flight operations due to some backlogs, adding the situation would be normal soon.

See latest updates on Delhi airport flight delays here

Flight operations at Mumbai's Chhatrapati Shivaji Maharaj International Airport and Sardar Vallabhbhai Patel Int...