A public battle between Cincinnati City Manager Harry Black and top brass in the police department has cost at least one city employee their job this week.
More departures could be on the way.
On Friday, sources say Mayor John Cranley asked Black to resign after a turbulent week at City Hall.
Black believes some police leadership are working to undermine him and Cincinnati Police Chief Eliot Isaac.
Here's a look at the string of controversies that has led Cranley to reportedly ask his hand-picked city manager to resign:
July 25, 2017: Fraternal Order of Police votes against participating in a refresh of the Collaborative Agreement , which is a court-order document that lays out standards for the city's community-police relations. FOP President Dan Hils said the union pulled out of the agreement's update because of criticism surrounding Sgt. Shannon Heine's testimony during Ray Tensing's murder trial.
September 12, 2017: Capt. Jeff Butler files a federal lawsuit against the Cincinnati city manager , alleging Black retaliated against him for questioning alleged misspending.
September 25, 2017: FOP reverses course, and votes to participate in the Collaborative Agreement refresh.
November 8, 2017: Hils files a grievance against Black, saying that Black threatened him in a phone call on Oct. 27 . Hils also reported the phone call as harassment to the Loveland Police Department. No charges resulted from the phone call.
December 7, 2017: The Sentinel Police Association, which represents black Cincinnati police officers, votes no confidence in Hils. In a statement, the association said Hils "failed to equally represent African American officers within the Cincinnati Police Department in matters ranging from discipline to promotion." The no-confidence vote was taken after Lt. Danita Pettis, a black officer, filed a complaint over derogatory comments she alleges Hils made to her.
Feb. 28, 2018: A former city IT employee alleges mismanagement in the 911 call center, and accuses Black of unprofessionally shouting and hugging her in an exit interview memo . The memo was leaked to the media before Black alerted Cincinnati City Council of it.
March 5, 2018: Capt. Bridget Bardua files a sexual discrimination complaint with the U.S. Equal Employment Opportunity Commission alleging that three police higher-ups -- one of them being Butler -- targeted her because she is a woman. The complaint also alleged the three are intentionally undermining Isaac, hoping to unseat him from his job.
March 6, 2018: The day after Bardua filed her complaint, an internal audit of the Cincinnati Police Department's overtime usage is leaked to a local news outlet . The audit states Bardua collected $82,000 worth of overtime pay or time off. Meanwhile, Sgt. Jason Voelkerding, who reports directly to Bardua and supported the claims in her federal complaint, collected $126,225 worth of overtime pay or time off.
March 7, 2018: In text messages sent to Cincinnati City Council, Black suggests recent leaks to media are the result of a " rogue element within the department that seeks to be disruptive and insubordinate relative to … the reality that you have an African American chief and city manager.”
March 9, 2018: Cranley asks City Manager Harry Black to resign , according to a City Council member and sources close to the two officials. Neither Cranley nor Black is talking about it publicly. Unless Black willing tenders his resignation, Cranley needs five votes on council to fire Black.
Joe Rosemeyer, Evan Millward and Paula Christian contributed to this timeline of events.