MADRID — Authorities say passengers at airports around the ***** have suffered some delays because of a ******* with check-in systems.

The Spain-based company Amadeus, which provides software to airports, airlines and the tourism industry, confirmed Thursday that a network issue caused ********** to some of its systems and services.

It said its technical teams identified the cause of the ******* and services were gradually being restored.

It would not say how many airlines or airports were affected.
London’s Heathrow airport said a small number of airlines were experiencing intermittent issues with their check-in systems at airports around the *****. It said there might be delays but that passengers would be able to check in.