The empty departure hall of Brussels Airport is seen in Zaventem, Belgium, Feb. 13, 2025. [Photo/Xinhua]

British police have arrested a man in connection with a cyberattack impacting Heathrow and other major European airports on Sept. 20, authorities said Wednesday.

According to the National Crime Agency (NCA), NCA officers arrested a man in his 40s in West Sussex Tuesday evening on suspicion of "Computer Misuse Act offences."

"He has been released on conditional bail," an announcement added while providing no more details.

"Although this arrest is a positive step, the investigation into this incident is in its early stages and remains ongoing," said Paul Foster, head of the NCA's National Cyber Crime Unit.

The cyberattack targeted Collins Aerospace, the service provider for the check-in and boarding systems. Airports in air hubs such as London, Brussels and Berlin reported delays and cancellations of flights after the attack over the weekend, which forced them to use manual check-in and boarding.