Transportation Secretary Buttigieg said U.S. was 'extremely concerned' Said FAA and international body were probing safety of flights Said it 'needs to be assessed' if it's safe for Americans to fly over the country Secretary of State Antony Blinken has led worldwide condemnation of Alexander Lukashenko after Belarusian authorities hijacked a Ryanair flight Passenger plane was flying from Athens to Vilnius when it was forced to make emergency landing in Minsk, where journalist Roman Protasevich was arrested The airliner was escorted to Minsk airport by a Soviet-era MiG-29 fighter jet, which reportedly had clearance to fire, amid 'bogus' reports of a bomb on board