
The official, who is involved in the investigation, says no motive has been established and it is not yet clear where the plane was taken.
According to reports, the official spoke on condition of anonymity because he was not authorised to brief the media.
The official said that hijacking was no longer a theory: “It is conclusive.”
The aircraft’s communication with the ground was severed under one hour into its flight on March 8 from Kuala Lumpur to Beijing.