Hacker group LulzSec said it has taken two Brazilian government websites offline. The Brasil.gov.br and Presidencia.gov.br were both unavailable as of 11:30am Wednesday, ZDNet UK can confirm.
"TANGO DOWN brasil.gov.br & presidencia.gov.br LulzSecBrazil", LulzSecBrazil tweeted in the early hours of Wednesday morning.
The outage, which probably stemmed from a distributed-denial-of-service (DDoS) attack, follows the arrest on Tuesday by the Metropolitan Police's Central e-Crime Unit of a 19-year-old man who they suspect is involved with the group.
LulzSec has denied that the individual, who it names as Ryan Cleary, is part of the group.
"Ryan Cleary is not part of LulzSec; we house one of our many legitimate chatrooms on his IRC server, but that's it," the group tweeted on Tuesday night.