India's aircraft accident investigation body said on Thursday it was too early to reach any "definite conclusions" on what led to the deadly Air India Boeing plane crash last month that killed 260 people.

After the release of a preliminary report, Air India started an examination of locking mechanisms on all fuel control switches as the carrier took precautionary steps on its Boein

An investigation into the Air India Dreamliner that crashed last month and left 260 people dead has revealed a mysterious audio recording.