A recent report by Wall Street Journal stated the investigation was focusing on the actions of the jet’s pilots and doesn’t so far point to a problem with the Boeing 787 Dreamliner.

Reports said the investigators told a Parliamentary panel that the plane's black boxes were not damaged. The revelation about the devices was critical to reconstructing the events leading up to the crash.

The Aircraft Accident Investigation Bureau (AAIB), which is leading the probe, is expected to release its initial findings today.