Holder plans to make the announcement, which was first reported by NPR’s Carrie Johnson, at a press conference at the White House on Thursday afternoon. The 63-year-old will call his tenure as attorney general in the “greatest honor” of his professional life, according to a Justice Department official.

The White House has not announced a candidate to replace Holder, who has a close personal relationship with President Barack Obama. Holder discussed his plans with Obama on several occasions over the last few months, and finalized his decision at the White House residence over Labor Day weekend, according to a DOJ official. If Holder stays in office until December, he will become the third-longest serving attorney general in the history of the United States.

via Eric Holder To Resign As Attorney General.