The mother of Chicago Police Officer Krystal Rivera has filed a wrongful-death lawsuit, alleging that her daughter’s own partner shot and killed her during a June foot chase in Chatham and that the city shares the blame. The complaint, filed in Cook County, says Rivera, a four-year department veteran and mother of a 10-year-old girl, died after a single bullet pierced her back. The family, represented by attorney Antonio Romanucci, is seeking answers and damages for what it calls a preventable death.
What the lawsuit alleges
The lawsuit traces the breakdown between Rivera and Officer Carlos Baker to what it describes as Baker’s infidelity, claiming Rivera had threatened to tell his long-term girlfriend about their relationship, according to the Illinois Answers Project. The complaint says Baker arrived uninvited at Rivera’s home the day before tactical officers chased a gunman into a Chatham apartment, and that during that June encounter Baker fired a single shot that struck Rivera in the back. It further alleges that Baker ran from the scene, did not render aid or call an ambulance, and that those actions robbed Rivera of any real chance at survival.
Police description and the ongoing probe
The Chicago Police Department has publicly called the shooting a “tragic accident,” and the Civilian Office of Police Accountability is investigating, according to the Chicago Sun-Times. Authorities say officers chased a suspected armed person into a South Side apartment on June 5 and then encountered another person carrying a rifle. Rivera’s partner was the only officer who fired his weapon. The Cook County medical examiner later ruled Rivera’s death a homicide, citing a single gunshot wound to her back.
Officer Baker’s record and unit assignment
The suit, along with earlier reporting, notes that Baker accumulated multiple complaints and was hit with suspensions and reprimands after joining the department in December 2021, according to WBEZ. He was assigned to the Gresham District tactical team in April 2024, briefly pulled from the unit over inexperience, then sent back in March 2025, months before the fatal shooting. The department stripped Baker of his police powers in August, saying he tried to obtain surveillance footage tied to an off-duty altercation at a bar.
Family response
“What she never should have had to fear was her own partner,” Rivera’s mother wrote in a statement released by the family’s lawyers, who argue Baker should never have been hired as a police officer, according to Romanucci & Blandin. The family is demanding the release of all body-camera and squad-car footage from the night of the shooting, along with Baker’s complete disciplinary history. Romanucci said the family has little faith in the department’s version of events and is turning to civil court for an independent review of what happened.
Criminal cases tied to the June encounter
Two men detained after the June confrontation, Jaylin Arnold and Adrian Rucker, now face charges tied to the events that unfolded before Rivera was shot, the Chicago Sun-Times reported. Prosecutors say Rucker was armed with an AR-style rifle and that officers recovered multiple firearms and drugs inside the apartment. Those criminal cases are separate from the Rivera family’s lawsuit but are part of the broader investigation into the police response that night.
Legal next steps
The wrongful-death case now moves into discovery in Cook County, where Rivera’s attorneys can seek personnel files, camera footage and other evidence that could test the department’s account, according to The Associated Press. COPA routinely notifies the Cook County state’s attorney’s office whenever an officer fires a weapon, and any potential criminal review of an officer’s conduct would depend heavily on those findings. If the Rivera family prevails in civil court, the city could face financial fallout along with renewed scrutiny of how Chicago’s tactical teams are supervised and disciplined.
Rivera’s relatives say the lawsuit is meant both to hold people accountable and to force transparency about the night she died. The case is still in its early stages, with the next public developments expected as lawyers begin trading discovery requests and filing motions in Cook County court.
