Bomb threats hit several European flights on Tuesday, but authorities found no explosives on any of the planes, according to DW Europe.

Polish authorities inspected two passenger planes that were targeted by threats and found nothing. A LOT Polish Airlines flight from London Heathrow made an unscheduled landing at Warsaw-Modlin airport after a bomb alert, and the airport briefly shut down. Airport spokesman Adam Szablowski told AFP that passengers were evacuated, the plane underwent security checks, and "nothing was found." The airport reopened around midday. A SAS flight from Copenhagen also received a threat and landed safely at Warsaw Chopin airport, where it was inspected. The source says it was not immediately clear whether the threats were linked.

In Spain, a Ryanair flight from Manchester to Murcia landed safely after a threat. Francisco Lucas, the Spanish government's delegate in the Murcia region, said on X that police "ruled out the presence of explosives on the plane."

Reuters reported that a flight from Israel landed in Sofia, Bulgaria, after a bomb threat sent by email. Bulgarian Interior Minister Secretary General Lyubomir Nikolov said counter-terrorism units were checking the plane, according to the BTA news agency.

Italian media reported two more threats against Ryanair flights from Lisbon and Dublin to Rome's Fiumicino airport. Air Force jets were deployed, and both threats proved to be false alarms.

The source adds that a WizzAir flight from London to Sofia was diverted to Budapest on Monday after a mid-air bomb threat. It also notes that similar alerts have occurred at European airports in recent weeks, and that they later turned out to be false.