At least seven passenger flights and an Israel-bound cruise ship were targeted by bomb threats on Tuesday, according to officials.

All planes landed safely and searches found no explosives. The airlines affected were Ryanair, Wizz Air, Scandinavian Airlines and Polish carrier LOT, with four Ryanair flights among the targets. Two Italian Eurofighter jets escorted a Ryanair flight from Dublin to Fiumicino Airport in Rome. London police said they had been informed of threats against four aircraft due to depart from or arrive at Heathrow and of a further alert in Manchester. The European Commission said it is monitoring the alerts and that it is too early to establish links between the incidents.