The documents appeared to contain the address, phone number, banking information, Social Security and credit card numbers of Ancona, the self-described Imperial Wizard of the Missouri-based Traditionalist American Knights of the Ku Klux Klan.
The second document also appeared to contain names of Ancona's associates.
We'll just leave this here: http://t.co/t1lAZymDU4 http://t.co/tSlmwmeH3T#OpKKK— Ku Klux Klan (@KuKluxKlanUSA) November 25, 2014
Anonymous has claimed to be in control of the hate group's Twitter account @KuKluxKlanUSA since Nov. 17. The hackers call it "retaliation" after Ancona's group sent out fliers threatening "lethal force" against "the terrorists masquerading as 'peaceful protesters" in Ferguson, Mo.
Under the hashtag #HoodsOff, the collective has also leaked what it says are the secret identities of KKK members across the state.
The doxxing of Ancona would undercut a surprisingly calm rendezvous earlier this month between the Klansman and a member of Anonymous, published online Monday.
In the video, several members of the hacking group sat with Ancona at what appeared to be a Steak n' Shake and interviewed him on his group's stance on the protests in Ferguson.