LulzSec has released almost 450 megabytes of sensitive information stolen from computers systems belonging to the Arizona Department of Public Safety (AZDPS).
The latest cyber attack is part of the group's Anti-Security (#AntiSec) campaign that targets any government agency and affiliated organization.
The Arizona Department of Public Safety attack was dubbed Operation Chinga La Migra, after a common phrase used by Spanish immigrants translating to "[expletive] the border patrol."
Despite the press release being posted on its website, LulzSec revealed that it wasn't the author. This means the attack might also be the work of other AntiSec supporters.
"In response to the unusual style of our press release... this one was written by an anonymous allied ship, not The Lulz Boat. :)" the hacking group said.
"We are releasing hundreds of private intelligence bulletins, training manuals, personal email correspondence, names, phone numbers, addresses and passwords belonging to Arizona law enforcement.
"We are targeting AZDPS specifically because we are against SB1070 and the racial profiling anti-immigrant police state that is Arizona," the press release reads.
Arizona's SB 1070, also known as the Support Our Law Enforcement and Safe Neighborhoods Act, is the broadest and strictest anti-illegal immigration legislation in the United States.
The leaked documents are classified as "law enforcement sensitive", "not for public
distribution", and "for official use only" and relate to border patrol and counter-terrorism operations.
They describe how informants are used to infiltrate cartels, motorcycle gangs, Nazi groups and even protest movements. The hackers warn that such actions will continue and LulzSec announced more releases for Monday.
The Arizona Department of Public Safety has not yet released a public statement about the incident, but its website remains offline at the time of writing this article.