Bomb threat against 9 planes at the Prague airport The Czech police today began checking nine planes and activated additional security measures at the airport after receiving anonymous bomb threats on incoming and outgoing flights of the Prague airport. Denisa Himlenkova, a spokeswoman for the Prague airport, announced that these threats targeted 9 flights, including four inbound flights and five outbound flights. According to him, all these planes are on the ground and are being examined by the police. Also yesterday, four planes heading to Prague faced a bomb threat.