Bryan Wesly Mathis

CUSTODIAL DEATH REPORT Agency Information ORIGINAL CDR Number: 26-587-CJ Version Type: VERSION Report Date: 8/3/2026 2:07 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 6 --- PAGE BREAK --- Identity of Deceased First Name: Bryan Middle Name: Wesly Last Name: Mathis Suffix: Date of Birth: 7/28/1979 Sex: Male Race: Anglo or White Age At Time Of Death: 47 Date/Time of Custody (arrest, incarceration) (mm/dd/yyyy hh:mm AM/PM): Date/Time of Custody or 8/28/2025 4:25 AM Incident: Date/Time of Death (mm/dd/yyyy hh:mm AM/PM): 7/28/2026 10:15 Death Date and Time: 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 Evaluation?: pending What was the manner of death? (select only one) Pending autopsy Custodial Death Report :: Page 2 of 6 --- PAGE BREAK --- Manner of Death: results Medical Cause of Death: Medical Cause of Death: Pending Autopsy Results Had the decedent been receiving treatment for the medical condition that caused the death after admission to your jail's jurisdiction? Medical Treatment: Unknown If death was an accident, homicide or suicide, who caused the death? Who caused the death?: Not applicable 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? Pre existing medical Could not be condition?: determined If death was an accident, homicide or suicide, what was the means of death? Not applicable, cause of death was Means of Death: illness/natural cause Location / Custody Information Custodial Death Report :: Page 3 of 6 --- PAGE BREAK --- Where did the event causing the death occur? 5200 Harry Hines Street Address: City: Dallas Blvd. County: Dallas Zip: 75235 What location category best describes where the event causing the death occurred? Location Category: Other, specify Other Location Category: Hospital 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 - single 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): Entry Date Time: 8/28/2025 4:25 AM Where did the death occur? Death Location: Medical facility General Information Custodial Death Report :: Page 4 of 6 --- PAGE BREAK --- Did any other law enforcement agencies respond to calls for service related to this incident? Other Agencies Respond?: No 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: Burglary of Building Offense 2: Resist Arrest Search or Transport Offense 3: Were the Charges:: Filed What were the types of charges or reason for contact? (Hold CTRL to select all that apply) Crime Against Type of Offense: Property 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: Appear intoxicated (alcohol or Unknown Make suicidal statements?: Unknown drugs): Exhibit any mental health Unknown Exhibit any medical problems?: Unknown problems?: Custodial Death Report :: Page 5 of 6 --- PAGE BREAK --- 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 Unknown 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 August 29, 2025, at approximately 4:25 a.m., Bryan Wesly Mathis W/M 07/28/1979 (Decedent) was booked into the Dallas County Jail Lew Sterrett Justice Center located by 111 W. Commerce St. Dallas, Dallas Count, TX 75207 by the City of Dallas Police Department on charges of Burglary of Building on warrant # F2558258 and Resist Arrest Search or Transport on warrant # M2558313D. On July 28, 2026, at approximately 8:55p.m., while escorting the Parkland Jail Medical Staff, who was passing out medication in the West Tower tank 09P12 "B" Cell, detention service officer observed the Decedent lying on the floor by this bunk. Several attempts to knock on the window of the cell were made to get his attention, but to no avail. The Decedent was deemed unresponsive. At 9:01 p.m., Parkland Jail Medical Staff and jail detention staff entered the Decedent's cell to attempt to obtain a response from inmate Mathis. All attempts were unsuccessful. At 9:04p.m., a medical emergency call was made via radio for detention supervisor and additional Parkland Jail Medical staff. Upon arrival, detention supervisory staff contacted Dallas County Sheriff Office Communication Section to request Dallas Fire and Rescue (DFR) to the location. At approximately 9:19 p.m., DFR unit #218 arrived at the housing location 9p12 and provided life saving measures for Mathis. At approximately 9:31p.m., Acadian medical arrived. At 9:35p.m., DFR transported Mathis to Parkland Memorial Hospital (PMH) and escorted by detention service personnel. At 9:56p.m., DFR arrived at PMH in room L6. PMH Dr. Calib Graham, pronounced Bryan Wesly Mathis deceased at 10:15p.m. An autopsy was conducted; results are pending. Custodial Death Report :: Page 6 of 6