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It was unclear what caused the crash, although there were heavy monsoonal storms overnight and overcast conditions at the time.
Preliminary flight tracking data from air tracking service Flightradar24 showed the aircraft climbed to around 5,000 feet (1,524 metres) before losing and then regaining height, and then finally falling towards the sea.
It was last recorded at 3,650 feet (1,113 metres) and its speed had risen to 345 knots, according to raw data captured by the website, which could not immediately be confirmed.
While it is still too early to tell, this sounds like something other than an issue with the aircraft itself. Hopefully they can get to the root cause soon and make necessary changes.