David Clarke resigned abruptly from his long-standing post as Milwaukee County Sheriff on Thursday afternoon.
Clarke, however, had previously vowed not to resign over the headshake-shakedown scandal until "right after that little mouse does", referring to the county executive pursuing a case against the sheriff.
"Pursuant to Wisconsin Statute 17.01, this communication is submitted as the notice of my resignation as Sheriff of Milwaukee County commencing August 31, 2017, at 11:59 p.m.", Clarke's resignation letter said, according to the Journal-Sentinel. A spokesman for the governor said that process will begin as soon as he is officially notified about the resignation by Milwaukee County.
In June, Clarke was supposedly being considered for the Assistant Secretary Position at the Department of Homeland Security.
Clarke has risen to national prominence in recent years, largely due to his appearances on conservative media programs and provocative social media posts.
Clarke is perhaps best known for his often controversial comments on race and gun violence, along with his outspoken support for Republican President Donald Trump.
Some Wisconsin conservatives had encouraged Clarke to challenge U.S. Sen. He later withdrew his name. Tammy Baldwin, a Democrat, but he repeatedly rejected their requests.
But Clarke has been fighting a series of scandals in his position as sheriff in Milwaukee County as well, including the death of a mentally ill man who was allegedly deprived of water in his cell.
Most recently, Andrew Kaczynski, Christopher Massie, and Nathan McDermott at CNN also found evidence that Clarke plagiarized - or at least poorly attributed - parts of his 2013 master's thesis on national security.