Milwaukee County Sheriff and controversial public figure David A. Clarke resigned from his post on Thursday.
The Milwaukee County Clerk confirmed the resignation, TMJ4 News Milwaukee reports. Clarke's letter of resignation, which was submitted at 3:17 p.m Central Time, gives no clue as to his reason for resignation.
"Pursuant to Wis. Stat. §17.01, this communicaiton is submitted as the notice of my resignation as Sheriff of Milwaukee County commencing August 31, 2017, at 11:59 p.m," the letter read.
— Steve Chamraz (@TMJ4Steve) August 31, 2017
It is not yet clear why Clarke resigned his office, or what his next move may be.
Clarke was considered for a role in the Department of Homeland Security under President Donald Trump, but withdrew his name from consideration subsequently.
Clarke recently released a book, Cop Under Fire: Moving Beyond Hashtags of Race, Crime and Politics for a Better America. Trump tweeted his support for the book on Monday, calling it "a great book by a great guy."