The website of the UK's National Crime Agency was briefly affected by a distributed denial of service (DDoS) attack today, just a few days after the agency announced the arrest of six teenagers for using a paid DDoS service. Lizard Squad, the group behind the attack service, is claiming responsibility on Twitter—and turning it into an advertisement for the service's next version.

The attack took the NCA website offline for over two hours this morning, according to SkyNews. At 9:00am BST, someone with access to the Lizard Squad Twitter account posted:

The NCA announced that it had arrested users of Lizard Stresser, the Lizard Squad Web-based DDoS tool, on August 28 and noted that it was continuing to contact about 50 individuals in the UK who had signed up for the service but had not mounted attacks with it. The six teenagers were charged with attacking gaming, retail, and media sites—apparently including Microsoft's Xbox Live and Sony's Playstation network. All six were released on bail after the arrests.

After the attack, the Lizard Squad Twitter account announced, "New weapon coming soon." That statement may be an allusion to the return of the Lizard Stresser site, which Lizard Squad claimed had recently been tested.