Flight disruptions
At least 35 aircraft have reportedly been searched or diverted since the disruption began earlier this week. The incidents have affected flights serving cities including Copenhagen, Dublin, Helsinki, Madrid, Milan, Prague, Rome, Vienna and Warsaw.
On Thursday, Aer Lingus Flight EI402 from Dublin to Rome diverted to the Évreux air base in France after receiving a bomb threat over French airspace. All 151 passengers and six crew members were evacuated while a bomb squad inspected the aircraft. No bomb was found.
Italian air force jets escorted a Finnair flight from Helsinki to Rome after an email threat. Bomb disposal experts found nothing. A second Finnair flight from Helsinki to Vienna also received a threat and landed safely.
Three Ryanair flights bound for Sofia, Bulgaria, were affected. Flights from Copenhagen and Madrid landed in Sofia, while a flight from London Stansted diverted to Plovdiv. Bulgarian fighter jets escorted all three planes, and inspections found no explosives.
Czech police said four planes headed to Prague were targeted by bomb threats. Authorities searched the aircraft after they landed and found nothing suspicious.