The FBI alleged he had worked with Cody Kretsinger, a 24-year-old who pleaded guilty to hacking charges in April.

BBC: 'Lulzsec hacker' latest to be arrested in US

The indictment, unsealed on Tuesday, accuses Rivera of working with Cody Kretsinger, a 24-year-old who pleaded guilty to hacking charges in April, and of publishing thousands of personal details of people associated with Sony online.

FORBES: FBI Arrests Suspected LulzSec Hacker For Sony Pictures Attack