A group of hackers angered by a PBS documentary about WikiLeaks has posted a fake news story on the website of the U.S. public broadcaster PBS claiming that dead rapper Tupac Shakur was alive and well.

The group, Lulz Boat, attacked PBS' servers on Sunday, posting stolen passwords and other sensitive PBS information alongside a story headlined Tupac still alive in New Zealand. Shakur was murdered in 1996.

PBS took down the story, but Lulz Boat's Twitter page linked to a cached copy. Officials from PBS did not immediately reply to an email seeking comment.

We just finished watching WikiSecrets and were less than impressed, Lulz Boat said, referring to an hour-long documentary that aired on PBS' Frontline program on Tuesday.

The documentary revolved around incarcerated U.S. soldier Bradley Manning, who is suspected of supplying WikiLeaks with a trove of sensitive military and diplomatic material. The documents have variously titillated and angered a worldwide Internet viewership for the past few months.

WikiLeaks founder Julian Assange, whom the United States wants to put on trial for leaking the documents, denounced the program as hostile before it aired. The Australian computer expert is free on bail in Britain, fighting extradition to Sweden over alleged sex crimes.

The identity of the people behind Lulz Boat was not known. Somewhat unhelpfully, they described themselves as a small team of 80-year-old men and people who smoke on webcam. They also proclaimed: Laughing at your security since 2011!

Lulz Boat said it was not related to Anonymous, another group of hackers who also consider Assange and Manning to be heroes. Anonymous disrupted the websites of various credit card and online payment companies in December in a protest against Assange's arrest in Britain.

(Reporting by Dean Goodman; editing by Mohammad Zargham)