FULLERTON ( KTLA ) -- A group of hackers calling itself " Anonymous " responsible for threats against the Fullerton Police Department has also claimed to be behind a security breach of user information on a website for the San Francisco Bay Area Rapid Transit.
The group sent a letter to the Fullerton Police Department announcing it would avenge Kelly Thomas' death by treating the police website "with as much mercy as was shown Kelly Thomas." They also threatened to disable the agency's website if the officers involved in the alleged beating aren't prosecuted.
Anonymous is demanding the immediate resignation of Police Chief Michael Sellers, the prosecution of the officers involved and for the city of Fullerton to pay the Thomas family at least $5 million. If the demands were not met by noon Sunday, the group said it would shut down the city's police website.
As of Sunday afternoon, Fullerton police officials said they had not detected any problems.
"This is not just a brutal attack another human being, but an attack against human rights," the group wrote in the letter, which was released on the Internet Saturday.
Police officials said the department is taking the threat seriously. The city's information technology staff have been ordered to secure the department's computers and to monitor its system for any trouble, a police sergeant told the Los Angeles Times.
The same group was also responsible for hacking into a marketing website for the San Francisco Bay Area Rapid Transit on Sunday, compromising data for hundreds of users.
Stolen data from MyBART.org, which was posted on Anonymous' Twitter account, included names, addresses, phone numbers and passwords.
They also encouraged followers to flood BART employees with emails and phone calls.
"We are working to mitigate the attack," BART spokesman Jim Allison said. "We're also working to notify the people whose information has been breached."
'Anonymous' Hacker Group Threatens Fullerton PD, BART Website
'Anonymous' also responsible for hacking San Francisco BART website
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