The hacker collective known as Anonymous has announced that it was not involved in the data leak of phone numbers and email addresses that allegedly belong to KKK members, which includes a Kentucky major and an Indiana senator.

Last week, the online hacktivist group promised to reveal up to 1,000 members of the Ku Klux Klan (KKK) by name. Anonymous then issued another press release on Sunday, announcing that it plans to expose the list of names gathered from various Twitter accounts it claims to have hacked as part of its "HoodsOff 2015" campaign later this week.

"And this is just the beginning. On November the 4th we will be having a twitter storm, spreading awareness about the operation. And on the 5th we shall release more than 1000 Ku Klux Klan members Names and websites, new and old," reads the statement.

However, on Sunday and Monday, a hacker who is not affiliated with the group released an unverified list of 57 phone numbers and 23 email addresses data through Pastebin, a website used to share and store text and computer code. Included on the list were nine U.S. senators and mayors.

In response to the data leak, Jim Gray, the mayor of Lexington, Kentucky, denied being a member of the Ku Klux Klan, calling the Anonymous postings "false, insulting and ridiculous" in a statement on Monday, reports USA Today.

"I have never had any relationship of any kind with the KKK. I am opposed to everything it stands for. I have no idea where this information came from, but wherever it came from, it is wrong," Gray said.

Likewise, Indiana Sen. Dan Coates tweeted Monday that he was not involved with the KKK.

"For those who are asking -- I have never had any affiliation with the Ku Klux Klan and deplore all forms of racial discrimination," wrote the Republican senator.

Anonymous also sent out tweets explaining that they are not responsible for the list released on Pastebin, which included false information.

"#ICYMI #OpKKK was in no way involved with today's release of information that incorrectly outed several politicians," tweeted @Operation_KKK, a Twitter account run by Anonymous.

"We respect the work of our fellow freedom fighters. However, we are unable to confirm, deny or take credit for any work that we did not do," tweeted the group.

"The anons at the helm of this initiative vouch ONLY for the dox list that will be released from this Twitter account on November 5 2015.

"This account has NOT YET released any information. We believe in due diligence and will NOT recklessly involve innocent individuals #OpKKK," it added.