WTMJ-TV's Steve Chamraz first broke the story Thursday. "I was not given any advance notice of this, as you can imagine my phone has been ringing off the hook".
Clarke was recently in the running for a high-level position at the Department of Homeland Security.
Clarke gave no reason for his resignation in a one-paragraph letter to the county clerk that was obtained by NBC News.
On Sunday, President Trump promoted Clarke's book, "Cop Under Fire: Moving Beyond Hashtags of Race, Crime and Politics for a Better America". The investigation stems from an incident at the Milwaukee airport, where Clarke ordered on-duty deputies to come shake down a fellow passenger who had stared him down and expressed distaste for the radical conservative sheriff.
Court sentences Samsung heir to five years prison
Lee has been accused of offering bribes of 38 million United States dollars for various departments after the death of his father. Some reports state some of Samsung's major investment projects may be suspended under the leader's imprisonment.
Clarke has risen to national prominence in recent years, largely due to his appearances on conservative media programs and provocative social media posts.
In June, DHS said Clarke wasn't a candidate.
Clarke described "A war between rule of law and anarchy-seeking hate". Tammy Baldwin, a Democrat, but he repeatedly rejected their overtures. Clarke said in response that he'd withdrawn his name from consideration. Clarke spoke at the 2016 Republican National Convention in Cleveland, Ohio.
He was hit by allegations in May that he plagiarized content in his master's thesis on homeland security, which he denied. He has been vocal about gun rights and critical of what he called the "hateful ideology" of the Black Lives Matter movement, saying at times, "Stop trying to fix the police, fix the ghetto".
In January, after four inmate deaths in county jails, County Supervisor Supreme Moore Omokunde urged Clarke to resign.
Murray pulls out of US Open, may miss rest of season
So, obviously there has been a lot of players with injuries this year - Roger and Rafa last year had a few problems. Murray , the champion in NY in 2012, also pulled out of the Masters tournament in Cincinnati leading up to the U.S.
Alexa has a new friend: Cortana
This cross-platform integration will also allow Alexa users to get access to some of the more unique aspects of Cortana . It's likely both Bezos and Nadella had Apple and Google at the top of their minds when they agreed to the partnership.
TDP scores a big victory in Nandyal
Telugu Desam Party has secured 97,106 votes; YSR Congress 69,710 votes while Congress had to settle with 1,153. This could mean that YSRCP candidate Silpa Chandra Mohan Reddy will be declared as the victor .
Qatar Restores Iran Ties
Al-Sulaiti returned to the Iranian capital on Friday after a 20-month hiatus that started in January 2016. Qatar will reinstate its diplomatic relationship with Iran, its foreign ministry announced Thursday.