From correspondents in Delhi, India, 12:30 AM IST

Over 20 international flights were delayed late Friday evening due to repair work being undertaken at the new runway of Delhi airport, officials said.

'The new runway is undergoing repair work and due to this all the flights are taking off and landing on the main runway 28. This has resulted in traffic congestion, which is generally very high during night hours when most international flights operate,' an official said.

The flights were delayed by more than an hour.

(Staff Writer, © IANS)