The U.K.’s National Crime Agency (NCA) said on Wednesday that a man was arrested in connection to the ransomware attack that has caused delays and disruptions at several European airports since the weekend.

The hack , which began Friday, targeted check-in systems provided by Collins Aerospace, causing delays at Brussels, Berlin, and Dublin airports, as well as London’s Heathrow, which lasted until yesterday .

While the NCA did not name the arrested man, the agency said he is “in his forties” and that he was arrested in the southern county of West Sussex on Tuesday under the country’s Computer Misuse Act “as part of an investigation into a cyber incident impacting Collins Aerospace.”

The man was released on conditional bail, according to the agency.

“Although this arrest is a posit

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