Federal prosecutors announced charges today against four alleged computer hackers in connection with last year’s hack of the web site of PBS.

Prosecutors say Ryan Ackroyd, Jake Davis, Darren Martyn and Hector Xavier Monsegur — alleged members of the “hacktivist” group LulzSec — hacked into PBS servers last year in retaliation for what they perceived to be unfavorable coverage of Wikileaks by the PBS news program “Frontline.” At the time, news outlets reported that LulzSec defaced PBS.org and posted a fake story on the PBS NewsHour website suggesting that the late rapper Tupac Shakur was actually alive and well in New Zealand.

PBS is based in Crystal City and the PBS NewsHour is produced in Shirlington, though prosecutors say the organization’s computer servers were actually located in Alexandria.

Ackroyd and Davis, of the United Kingdom, and Martyn, of Ireland, are each charged with two counts of computer hacking conspiracy. In addition to the PBS hack, they’re also accused of hacking into the systems of Sony Pictures Entertainment, Rockville-based Bethesda Softworks, and other companies.

Monsegur, of New York City, has already pleaded guilty to a host of charges connected with those hacking incidents. See the full list of charges from a United States Attorney’s Office press release.