A London-bound easyJet flight was diverted to Cologne Saturday evening due to a "suspicious conversation" heard on board, with passengers evacuated on emergency slides and three men arrested, German police said.

The pilot of the flight from the Slovenian capital Ljubljana decided to land after passengers told flight attendants "that several men were talking about terrorist activities," a police spokesman told AFP, without elaborating on the content of their discussion.

After the plane landed in a secure area of Cologne-Bonn airport at about 6:00 pm (1600 GMT), federal police evacuated the 151 passengers down emergency slides. They isolated a backpack belonging to the three suspects, which was blown up by bomb squad officers.

The three men were handed over to police in Cologne, but no details were provided on the contents of their baggage or the reality of the terrorist threat.

Air traffic at the airport was interrupted between 7:00 pm and 10:00 pm with 10 flights diverted and 20 departures delayed.

Source: Khaleej Times