Attorney General Eric Holder Jr. did not list at least six U.S. Supreme Court briefs that a questionnaire asked him to disclose during his confirmation process in late 2008, the Justice Department acknowledged Friday.

Two of the six briefs, in cases involving Jose Padilla, were the subject of a story Wednesday on the Web site of National Review. In response to that story, Holder spokesman Matthew Miller said the briefs “should have been disclosed as part of the confirmation process” and that the briefs were “unfortunately and inadvertently missed” in preparing thousands of pages of records.