Update - Death Investigation
August 29, 2025 – San Diego County Sheriff’s Office officials report that the Sheriff's Office is releasing details following the death of a 
31-year-old woman, Callen Lines, who was in custody at the Las Colinas Detention and Reentry Facility. On May 12, 2025, Sheriff's Homicide investigators were notified of Ms. Lines passing at a local hospital.
On May 12, 2025, at around 7:25 p.m., Sheriff's Sergeants at the Las Colinas Detention and Reentry Facility were performing their routine supervisor checks when they discovered Ms. Lines unresponsive inside her cell. Upon observing the situation, the sergeants immediately activated 9-1-1, requested assistance from the facility's medical staff and began CPR.
Paramedics and the Santee Fire Department assumed lifesaving measures upon their arrival. Paramedics transported Ms. Lines to a local hospital. Despite their efforts, she was pronounced deceased at the hospital at about 8:15 p.m.
Related: San Diego County Sheriff Identifies 31-Year-Old Woman Following In-Custody Death at Area Hospital
Ms. Lines, a resident of San Diego County, had been in custody since May 11, 2025, and was facing multiple theft-related charges, including vehicle theft, and resisting an officer.
The San Diego Sheriff's Office extends our sympathies to the Lines family and all those affected by Ms. Lines' passing. A Sheriff's Family Liaison Officer will continue to support the family as they navigate through this difficult time.
The Citizens' Law Enforcement Review Board (CLERB) was notified regarding the incident. As is the protocol for all in-custody deaths, the Sheriff's Homicide Unit responded and is conducting a thorough investigation to ensure all aspects of this incident are examined.
The Medical Examiner's Office has completed an autopsy of Ms. Lines and determined the cause of death is fentanyl and methamphetamine toxicity, and the manner of death is accident.
When Ms. Lines was booked into the Las Colinas Detention and Reentry Facility, her intake screening urinalysis tested positive for methamphetamine, fentanyl, and additional narcotics. It is unknown what her drug toxicity levels were at this time. The Sheriff's Office has developed a three-pronged approach to combatting drug overdoses in the jail. This involves interdiction, harm reduction and enforcement. We are committed to the safety of individuals in our jail and continue to make meaningful improvements.
To view the Press Release dated May 13, 2025, click here.
To view the Press Release dated May 16, 2025, click here.
Source: San Diego County Sheriff’s Office