A new wave of bomb threats disrupted at least 27 passenger flights across Europe on November 5, forcing airlines and aviation authorities to take emergency precautions.

According to Reuters, affected airlines included Aer Lingus, Wizz Air, LOT, Finnair, easyJet and Iberia. Flights heading to cities including Paris, Rome, Prague, Brussels and Milan were among those affected.

Some aircraft were diverted, while fighter jets were deployed to escort certain flights as authorities responded to the threats.

No explosives were reported found during the searches, and investigators had not established who was responsible.

The disruptions followed an earlier wave of threats, raising fresh concerns about aviation security across Europe.