Breaking: Malaysia Airlines crashes in Ukraine

Malaysia Airlines MH17 passenger jet has crashed in Ukraine near the Russian border
The Boeing 777 flying from Amsterdam to Kuala Lumpur had 280 passengers and 15 crew members on board.
Cause of  the crash  yet unknown.

UPDATE 1: Malaysia Airlines Twitter feed says airline has lost contact with Flight MH17 from Amsterdam
UPDATE 2: According to Reuters, “Ukrainian Interior Ministry adviser said the Buk missile was fired by separatists: Interfax”