Turkish Airlines TK1923 Istanbul to Basel just returned to Istanbul due to bomb threat.
Turkish Airlines TK1923 from Istanbul to Basel is returning to Istanbul. Turkish media reporting a bomb threat pic.twitter.com/8UsG7EL7tG— Seref Isler (@seref_i) April 17, 2015
TK1923 TC-JHD diverted back to IST due to bomb threat @flightradar24 pic.twitter.com/WVBdQb6MkO
— Orkun Onuk (@OrkunOnuk) April 17, 2015