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San Diego County Sheriff’s officials failed to investigate at least seven reported sexual assaults at the privately run Otay Mesa immigration detention center in 2025, and records show the agency has ceded control of the cases to civilian administrators employed by the nation’s largest for-profit prison contractor.
Under a 2020 memorandum of understanding between the sheriff’s department and CoreCivic, detention center Warden Christopher LaRose has authority to decide whether to investigate rape allegations at the facility, which currently houses just under 1,500 federal immigration detainees, most of whom are in custody awaiting hearings and have not been convicted of a crime.
CalMatters obtained the memorandum after seeking additional information about the alleged rapes and four attempted sexual assaults through a California Public Records Act request. While a sheriff’s spokesperson said the agency was not investigating those cases, he said he was unable to turn over additional records because they were part of “a law enforcement investigation.”
CoreCivic representatives did not respond to repeated requests for comment on this story.
The company manages the detention center under a contract with the Department of Homeland Security and the Immigration and Customs Enforcement agency’s Office of Enforcement and Removal Operations. ICE officials did not immediately respond to a request for comment.
Seven privately run immigrant detention centers operate in California, with CoreCivic holding contracts for two of them. It could not immediately be determined if other detention centers have similar agreements with local law enforcement agencies.
“We’re horrified but not surprised to learn that numerous sexual assaults went uninvestigated at a CoreCivic facility,” said Susan Beaty, senior attorney with the California Collaborative for Immigrant Justice advocacy group.
“Local and state enforcement agencies have a responsibility to use their power to protect the rights of Californians in detention, and hold accountable both ICE and private prison companies that profit to the tune of billions of taxpayer dollars to incarcerate immigrants in our state.”
On its website, CoreCivic states it has a “zero tolerance” policy against all forms of sexual abuse and sexual harassment. “CoreCivic has outlined an aggressive plan specifying the efforts we undertake to Prevent, Detect, and Respond to all allegations of conduct that falls into either category,” the company states.
A 2022 audit conducted by the outside company Creative Corrections found the facility met all federal standards for preventing sexual assaults.
San Diego County Board of Supervisors Chair Terra Lawson-Remer said she plans to question San Diego County Sheriff Kelly Martinez at a hearing Tuesday night on ICE transfers from county jails.
“I do not have much confidence at all in CoreCivic’s ability to investigate these very serious allegations,” she said earlier this month.
San Diego County is in the midst of a separate legal battle with CoreCivic over the Otay Mesa Detention Center. In a lawsuit filed this month, the county alleges the Trump administration and Tennessee-based CoreCivic illegally blocked a public health inspection of the detention center. According to the lawsuit, U.S. Immigration and Customs Enforcement initially cleared county officials to enter the facility but reversed that decision when the inspection team arrived.
Overall, there were 142 calls for service to the San Diego County Sheriff’s Department for the Otay Mesa Detention Center in 2024. Fourteen were identified as related to the Prison Rape Elimination Act (PREA), a 2003 federal law designed to prevent, detect and respond to sexual abuse and harassment in correctional facilities.
Last year, there were 159 calls for service to the Otay Mesa facility. Twenty-one calls were related to the Prison Rape Elimination Act, and of those, seven were allegations of rape.
CalMatters used a Public Records Act request to obtain a digital log generated by 911 dispatchers and emergency services for 2024 and 2025.
CalMatters attempted to obtain additional records about the sexual assault and attempted sexual assault incidents, such as the audio recordings of the 911 calls and the full dispatch log, but the sheriff’s department refused to release them, stating that “records of a law enforcement investigation, or any investigatory or security files compiled by a law enforcement agency are exempt from disclosure.”
The records CalMatters obtained gave no indication whether the victims were detainees or employees. Similarly, the records gave no indication about the perpetrators.
The department’s memorandum of understanding with CoreCivic was signed and dated by former San Diego County Sheriff Bill Gore in 2020.
“Under the Memorandum of Understanding…the facility’s Warden is responsible for investigating any allegation of sexual assault or abuse,” said Lt. David Collins, the media relations director for the sheriff’s department. Collins referred further questions about the incidents to CoreCivic.
He said CoreCivic “did not request our involvement” for any cases last year.
“Because no criminal investigations were initiated by the Sheriff’s Office, no reports were forwarded to the San Diego County District Attorney’s Office for consideration of charges,” he said.
If deputies had investigated, the MOU would require them to forward their findings to CoreCivic.
“Upon completion/closure of an investigation, Investigating Agency will forward a copy of the investigation report to the Facility for retention as part of Facility’s record-keeping requirements,” the MOU states.
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