Two teenagers in Norway have been arrested in connection with a series of computer attacks.
Britain's Serious Organised Crime Agency (Soca) is believed to have been among their suspected targets.
Local reports suggest other victims included the Norwegian Lottery and Germany's Bild newspaper.
"We have arrested the two we think were most important in these attacks, but we still want to talk to more people," said Norwegian prosecutor Erik Moestue.
The Serious Organised Crime Agency website has temporarily been taken offline after a cyber attack by hackers.
The distributed denial of service (DDOS) attack, which involves websites being hit by a flood of users at the same time, was carried out on Wednesday night.
However a Soca spokesman said the incident did "not pose any security risk to the organisation".
DDOS attacks have previously been linked to the international hacking 'collective' Anonymous.
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