A Chicago police officer shot and killed his partner while they pursued a suspect, a tragedy now compounded by revelations of the shooter’s extensive history of misconduct and the victim’s prior pleas for separation from him.
Officer Krystal Rivera died on June 5, 2025, after being struck in the back by a single gunshot fired by her partner, Officer Carlos Baker. The incident occurred in the Chatham neighbourhood as the pair chased a suspect, Adrian Rucker, into an apartment building. Footage released by the Civilian Office of Police Accountability (COPA) shows Baker kicking down a door before the shot is fired.
The Pursuit and Capture
The fatal pursuit targeted 25-year-old Adrian Rucker, who prosecutors allege pointed a rifle at officers during the chase. According to official statements, Rucker was taken into custody and now faces multiple felony charges, including armed violence and possession of a fraudulent ID. At the time of his arrest, he had six active arrest warrants, one for a felony in Cook County.
Prosecutors stated that three firearms, including a loaded AR-style rifle, and multiple drugs were recovered from the apartment. Rucker is not accused of firing any shots during the incident. In statements, Rucker has described himself as incarcerated due to the event and claimed the Chicago Police Department used his image to assign blame, despite his partner firing the fatal shot.
A Partner’s Troubled History
The shooting has ignited a wrongful death lawsuit and intense scrutiny of how Carlos Baker remained on the force. According to disciplinary records cited in the lawsuit, Baker had at least 11 misconduct complaints filed against him in less than three years of service—a record worse than 95% of Chicago Police Department officers. He faced at least three suspensions and two reprimands since joining in December 2021.
His alleged infractions were severe and varied. During his probationary period, he was accused of brandishing a firearm at a woman he met online while she was on a date; the woman reportedly refused to cooperate, and he faced no discipline. He was later disciplined for causing a seven-car crash during a high-speed chase he failed to report, and for abusing his police powers to access surveillance footage of an off-duty altercation.
In a separate incident, Baker allegedly assaulted a female colleague at a bar and then tried to interfere with the investigation. This led to him being stripped of his police powers on August 15, 2025. He remains employed by the department but is restricted to handling non-emergency 311 calls. Records show a request for his transfer to an elite tactical team was initially denied due to disciplinary issues but was later approved.
Breakdown of a Relationship and a Plea for Help
The tragedy is further contextualised by the officers’ personal relationship. Rivera and Baker had been in an on-again, off-again romantic relationship since early 2023, shortly after being partnered in January of that year. According to the family’s lawsuit, Rivera ended the relationship after discovering Baker was involved with another woman.
In the days before her death, Rivera had expressed serious concerns. The lawsuit states she feared Baker’s “adverse reaction” to the breakup and his continued attempts to contact her outside work. Less than 48 hours before the shooting, Baker allegedly showed up uninvited at her home after she had told him not to. Crucially, Rivera had reportedly informed supervisors of her fear for her safety with Baker as her partner and had requested a professional separation.
Aftermath and Allegations of a Cover-Up
The immediate aftermath of the shooting is a key point of contention. Baker initially radioed that someone had fired “at police” before realising Rivera was wounded. The Rivera family’s lawsuit, filed by attorney Antonio Romanucci, alleges Baker then failed to render aid or call an ambulance promptly, and that Rivera herself attempted to call in the shooting. Body camera footage shows Baker dragging the wounded Rivera down a flight of stairs.
The lawsuit, filed on behalf of Rivera’s mother Yolanda on December 11, 2025, argues the department knew Baker was “reckless” and unfit for duty, and that retaining him was negligent. “They took affirmative action to hire Carlos Baker when the only action should have been to terminate his probation and ensure he never wore a CPD shield or carried a gun,” Romanucci said. The suit alleges Baker’s actions after the shooting constituted an intentional cover-up.
The Cook County State’s Attorney’s office initially declined to prosecute Baker, though the family’s legal team hopes for a reconsideration. The department has referred to the shooting as a “tragic incident” and a “tragic accident.” Former Superintendent Eddie Johnson called the footage “difficult to watch,” stating things “went terribly wrong in the blink of an eye.” The Civilian Office of Police Accountability continues to investigate, with the family’s lawyers expressing concern over potential editing of the released bodycam footage.
