QantasAirbus SAS and Rolls-Royce Group launched an investigation into why an engine on a Qantas Airways (QUBSF) A380 exploded while the plane was in the air, forcing an emergency landing in Singapore.

Investigators from aviation authorities in France, Australia and the UK will all join the investigation, Bloomberg News reported.

The plane experienced engine problems not long after departing Singapore for Sydney, Australia. The plane returned to Singapore. None of the 459 people on board were injured.

One of the plane's Rolls Trent 900 engines exploded in mid-flight, scattering debris across an Indonesian island.

"The engine manufacturer is where we should look," Howard Wheeldon, senior strategist at BGC Partners in London, told Bloomberg News. "Rolls have to step up to the plate and ensure that all procedures were carried out correctly. The manufacturer of the aircraft will be very concerned."

Qantas has grounded its fleet of A380 jets until they can determine that caused the incident. This is the second time in three months that Qantas has experienced problems with a Rolls-Royce engine.

The A380 fleet will remain grounded "until we are confident that Qantas safety requirements have been met," CEO Alan Joyce said in a statement.

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