Quinnetta Ariana Brinkley

CUSTODIAL DEATH REPORT Agency Information CDR Number: 25-561-CJ Version Type: AMENDED Report Date: 12/2/2025 2:00 PM Status: Submitted Agency/Facility Information Dallas County 133 N. Riverfront Agency Name: Agency Address: Sheriff's Dept. Blvd. Agency City: Dallas Agency State: TX Agency Zip: 75207 Director Information Director Salutation: Sheriff Director First Name: Marian Director Middle Name: Director Last Name: Brown Youashavion Reporter Name: Reporter Email: [email protected] Williams Decedent Information Custodial Death Report :: Page 1 of 7 --- PAGE BREAK --- Identity of Deceased First Name: Quinnetta Middle Name: Ariana Last Name: Brinkley Suffix: Date of Birth: 11/7/2003 Sex: Female Black or African Race: American Age At Time Of Death: 21 Date/Time of Custody (arrest, incarceration) (mm/dd/yyyy hh:mm AM/PM): Date/Time of Custody or 7/13/2025 8:20 PM Incident: Date/Time of Death (mm/dd/yyyy hh:mm AM/PM): Death Date and Time: 7/13/2025 9:25 PM Manner / Cause of Death Has a medical examiner or coroner conducted an evaluation to determine a cause of death? Medical Examiner/Coroner Yes, results are Evaluation?: available What was the manner of death? (select only one) Manner of Death: Accidental Custodial Death Report :: Page 2 of 7 --- PAGE BREAK --- Medical Cause of Death: Medical Cause of Death: Based on autopsy results, Decedent died as a result of toxic effects of Fentanyl (Fentanyl Toxicity) Had the decedent been receiving treatment for the medical condition that caused the death after admission to your jail's jurisdiction? Medical Treatment: Not Applicable If death was an accident, homicide or suicide, who caused the death? Who caused the death?: Other detainee(s) If a weapon caused the death, what type of weapon caused the death? (Hold CTRL to select all that apply) Type of weapon that caused Not Applicable death?: Was the cause of death the result of a pre-existing medical condition or did the decedent develop the condition after admission? Not Applicable; cause of death was Pre existing medical accidental injury, condition?: intoxication, suicide or homicide If death was an accident, homicide or suicide, what was the means of death? Means of Death: Other, specify Based on autopsy results, Decedent died as a result of Means of Death Other: toxic effects of Fentanyl (Fentanyl Toxicity) Custodial Death Report :: Page 3 of 7 --- PAGE BREAK --- Location / Custody Information Where did the event causing the death occur? 111 Commerce Street Address: City: Dallas Street County: Dallas Zip: 75207 What location category best describes where the event causing the death occurred? Law Enforcement Location Category: Facility What type of custody/facility was the Decedent in at the time of death: Type of Custody: County Jail Specific type of custody/facility: Specific Type of Custody/Facility: Jail - multiple occupancy cell What was the time and date of the deceased's entry into the law enforcement facility where the death occurred (mm/dd/yyyy hh:mm AM/PM): 3/21/2025 12:22 Entry Date Time: AM Where did the death occur? Law enforcement Death Location: facility/booking center Custodial Death Report :: Page 4 of 7 --- PAGE BREAK --- General Information Did any other law enforcement agencies respond to calls for service related to this incident? Other Agencies Respond?: Yes What were the most serious offense(s) with which the deceased was (or would have been) charged with at the time of death? Offense 1: Assault Causes B/I Retaliation w/ Govt. Employee Offense 2: Offense 3: Were the Charges:: Filed What were the types of charges or reason for contact? (Hold CTRL to select all that apply) Violent Crime Type of Offense: Against Persons At any time during the incident and/or entry into the law enforcement facility, did the decedent display or use a weapon? Decedent display/use of No weapons: At any time during the incident and/or entry into the law enforcement facility, did the decedent: Attempt to Injure Others?: No At any time during the incident and/or entry into the law enforcement facility, did the decedent: Custodial Death Report :: Page 5 of 7 --- PAGE BREAK --- Appear intoxicated (alcohol or Yes Make suicidal statements?: No drugs): Exhibit any mental health Yes Exhibit any medical problems?: No problems?: At any time during the incident and/or entry into the law enforcement facility, did the decedent: Barricade self or initiate Resist being handcuffed or No No standoff?: arrested?: Physically attempt/assault Gain possession of officer's No No officer(s): weapon: Verbally threaten other(s) Escape or attempt to No No including law: escape/flee custody: Attempt gain possession No officer's weapon: Was the deceased under restraint in the time leading up to the death or the events causing the death? Under Restraint: No Summary of Incident Summary of How the Death Occurred: (max. 30,000 characters) Summary: On July 13, 2025, at approximately 8:23p.m., Dallas County Sheriff's Department jail personnel were conducting a "face-to-face" walk through security rounds. They were notified by multiple inmates, that Quinnetta Ariana Brinkley B/F 11/07/2003 (Decedent), and another inmate, were "not moving". The officers observed the Decedent laying on her bunk and was unresponsive. The officers called for additional staff and medical personnel who responded to the location. Medical personnel determined that the Decedent needed to be transported to Parkland Memorial Hospital (PMH) for additional treatment. The officers were then notified of two additional inmates that began to have the same symptoms as the first two, and that one of them had smuggled Fentanyl into the jail in her vagina, which all four of the affected inmates allegedly had taken. The Decedent was transported to Parkland Memorial Hospital (PHM) and upon arrival, was pronounced deceased at 9:25p.m., by Dr. Stacy Hail M.D. Autopsy was conducted on 07/15/2025 the following are the medical findings: 1. Toxic effects of Fentanyl: A. Postmortem toxicology positive for fentanyl and norfentanyl B. See Toxicology results Custodial Death Report :: Page 6 of 7 --- PAGE BREAK --- 2. History that the decedent was found unresponsive inside the Dallas County jail. She was transported to the hospital where resuscitation efforts were unsuccessful. Conclusions: Based on the case history and autopsy findings, it is the opinion of Medical Examiner Travis Danielsen M.D that Quinnetta Brinkley, a 21-year-old Black female, died as a result of toxic effects of fentanyl "Fentanyl Toxicity" Manner of Death: ACCIDENT Dallas County Sheriff's Department Detective J.M. Cox #435 Criminal Investigation Section Custodial Death Report :: Page 7 of 7