According to the Australian Federal Police, the leader of the international hacker group LulzSec has been arrested. According to reports on Twitter, the individual was arrested in Australia, in New South Wales.
— Michael Rusch (@weeddude) April 23, 2013
According to ABC Australia, the man arrested is the "self-proclaimed" leader of Lulzsec, or Lulz Security. The unidentified 24-year-old was from Point Clare in New South Wales, and was arrested there as well.
We'll update this post when more information becomes available.