A New York-bound Emirates flight carrying nearly 250 people was Thursday forced to return to Athens shortly after takeoff following a US security alert.
Officials said the information related to “a suspicious person travelling on board”.
A police spokesman said the plane was accompanied back to Athens’ Eleftherios Venizelos international airport by two F-16 Greek air force fighter jets.
Flight EK-210 was turned back 45 minutes after takeoff and landed at around 10:00 pm (2000 GMT), the spokesman said, adding that searches were ongoing on the plane.
The flight was carrying 228 passengers and 18 crew.
Greek media reported that US authorities warned Greek police of the presence of a “suspicious person” on board the plane.
Earlier on Thursday, another Emirates flight to Dubai was not allowed to take off from Eleftherios Venizelos and all passengers were checked also for security concerns but nothing suspicious was found, police sources added.
That flight took off after a five-hour delay.