New Delhi, June 21 -- An IndiGo flight (6E 6764) from Guwahati to Chennai was forced to divert to Bengaluru after the pilot issued a 'fuel mayday' call due to insufficient fuel in the plane, sources said on Saturday.

According to sources, the incident occurred on Thursday. The pilot did not get clearance to land in Chennai due to congestion at the airport.

"The diversion occurred because of congestion at Chennai airport, which prevented the aircraft from landing there in time. Passengers were on board during the emergency reroute," they said.

"The flight landed safely in Bengaluru at 8:15 PM. During the refuelling process, passengers were provided refreshments, and their baggage was offloaded. Due to Flight Duty Time Limitations (FDTL)...