Travelers wait in the terminal at Heathrow Airport after European airports including Brussels, Berlin and London's Heathrow were hit by "cyber-related disruption" on Saturday, September 20. Justin Tallis/AFP/Getty Images London —

A man in his forties has been arrested in connection to a cyber attack that knocked out automatic check-in systems at some of Europe’s busiest airports last week.

The man, who was arrested in West Sussex, England, on Tuesday evening, was detained on suspicion of Computer Misuse Act offences, the UK’s National Crime Agency (NCA) said in a statement shared with CNN. He has been released on conditional bail.

“Although this arrest is a positive step, the investigation into this incident is in its early stages and remains ongoing,” Paul Foster, head of th

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