A 40 -year -old was arrested for the cyberattack at European airports, causing chaos on flights.

Britain’s National Crime Fight (NCA) has announced that the man was arrested in West Sussex as part of a cyberattack investigation that hit Collins Aerospace, which provides check-in and boarding systems for several airlines worldwide.

“Although arrest is a positive step, the research is still at an early stage and continues”said Paul Foster, head of the NCA cyberspace unit.

The man was arrested Tuesday night with the suspicion that he had violated the computers’ law and was released on a guarantee, the BBC said.

On Monday, the service cyber security of the EU announced that in the attack used ransomware.

Ransomware disrupts the systems and often hackers who make this kind of attacks seek ransom in cryptocurrencies to restore damage.

The attack on the US software company Collins Aerospace was discovered on Friday night and resulted in the operation of many European airports, including its airports Londonof Brusselshis Dublin and his Berlin.

Flights were canceled and delayed throughout the weekend, while some airports are still face delaysas is the case in Heathrow.