Air India #AI129 from Mumbai is declaring an emergency due to a bomb threat.
A Boeing 777-300ER declared an emergency on approach to London Heathrow due to a bomb threat.
A 17-year-old boy was arrested on Wednesday in connection with the bomb threats issued to airlines in the past three days.
The aircraft is a 6-year-old Boeing 777-300ER (registration VT-ALX).
UPDATE 12:45 BST
The flight is on hold at 25,000 ft, North-East of London.
UPDATE 13:05 BST
On approach to LHR.
UPDATE 13:25 BST
On approach to runway 27L.
UPDATE 13:32 BST
Flight #AI129 safely landed runway 27L at London Heathrow.
UPDATE 13:42 BST
The Boeing 777-300ER taxied to parking near gate 49 at terminal 2.