New Delhi, March 10 -- Passengers travelling to the Heathrow Airport in UK, on Monday, March 10, have been warned to expect severe delays after a car burst into flames in a tunnel close to the airport terminal.

Although the previously closed routes have now been opened, there still continues to be some congestion, the Heathrow Airport announced on X.

The vehicle was seen on fire inside one of the airport's tunnels which connects Terminals 1, 2 and 3. The M4 southbound between junctions 4 and 4a was closed due to the blaze, causing significant delays for those on ground, and for flyers hoping to catch their flight, reported The Mirror.

The Heathrow Airport recently posted that access to Terminals 2 and 3, which was earlier restricted, a...