A British Airways Airbus A319-100 was en route from London to Oslo when it developed an engine problem.
Passengers heard a loud explosion, and saw smoke from the right engine. Apparently the engine doors blew off.
During takeoff, the casing of the left engine ‘came away’ and the right engine exploded when the plane made a quick return, landing in London.
Good thing that Emergency services were on standby to extinguish the engine fire.
Passengers and crew made an emergency evacuation via emergency slides.
None of the 5 crew and 75 passengers were injured.
The ABC News video below suggests a birdstrike that is purely speculative