VERO BEACH, Fla. — A St. Lucie County Sheriff’s Office detective has been arrested on a felony driving under the influence charge following an off-duty traffic crash involving an agency-owned vehicle in Vero Beach, Florida.
Detective Tyler August Horstman surrendered to authorities at the Indian River County Jail on Monday, October 26, 2026, after an arrest warrant was issued in connection with the crash earlier this year.
According to the St. Lucie County Sheriff’s Office, blood testing indicated Horstman had a blood alcohol concentration of 0.246, more than three times Florida’s legal driving limit of 0.08.
Horstman faces a felony DUI charge involving serious bodily injury. He was released from custody after posting a $15,000 bond and has been placed on unpaid administrative leave while criminal proceedings continue.
Details of the Vero Beach Traffic Crash
According to information released by the Vero Beach Police Department and subsequent reporting on the arrest investigation, officers responded to a two-vehicle collision at approximately 11:25 p.m. on March 1, 2026, at the intersection of Beachland Boulevard and State Road A1A.
The collision involved a Ford F-150 pickup truck operated by Horstman and a Chevrolet Equinox driven by 20-year-old Mariana Jimenez.
Investigators reported that Horstman was off duty and operating an unmarked vehicle belonging to the St. Lucie County Sheriff’s Office when the collision occurred.
The crash resulted in significant damage to both vehicles.
According to the police investigation, Horstman was traveling eastbound on Beachland Boulevard at approximately 63 mph in a posted 35-mph speed zone. Investigators determined that Horstman entered the intersection with a green traffic signal.
Police also reported that Jimenez, who was traveling southbound on State Road A1A, entered the intersection against a red traffic signal.
These findings are relevant to the investigation because authorities identified alleged driving violations involving both motorists. Horstman’s criminal charge concerns his alleged impairment and the serious injuries associated with the collision.
The Sheriff’s Office initially described the incident as a March 2 crash, while subsequent Vero Beach Police Department reporting identified the collision as occurring late on March 1.
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Woman Suffers Serious Injuries in Collision
According to reporting based on the police investigation and arrest affidavit, Jimenez suffered a traumatic brain injury in the crash.
A one-year-old child traveling in her vehicle was also taken to the hospital for evaluation. Police subsequently reported that the child was not injured.
Horstman and Jimenez were transported to HCA Florida Lawnwood Hospital in Fort Pierce for medical treatment.
Vero Beach police investigators examined the crash scene, vehicle data, medical information and other evidence while determining the circumstances surrounding the collision.
Authorities have not established through a final court judgment that Horstman is criminally responsible for the woman’s injuries.
Blood Alcohol Test Reportedly Revealed Level Above Legal Limit
The St. Lucie County Sheriff’s Office reported that it received notification on September 9, 2026, that Horstman’s blood test results indicated a blood alcohol concentration of 0.246.
Florida’s generally applicable blood alcohol limit for operating a motor vehicle is 0.08.
The reported result was approximately 3.08 times that threshold.
According to the arrest investigation, Horstman acknowledged having consumed beer earlier in the evening. Investigators also documented observations about his physical condition after the collision.
The reported blood alcohol concentration and the investigators’ observations are evidence cited in the criminal investigation. Their admissibility, interpretation and legal significance remain subject to the judicial process.
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Felony Arrest Warrant Issued October 26
Following the criminal investigation conducted by the Vero Beach Police Department, authorities issued a felony arrest warrant for Horstman on October 26, 2026.
The reported charge involves driving under the influence with a blood or breath alcohol level of 0.15 or greater and causing serious bodily injury.
Horstman surrendered at the Indian River County Jail that afternoon.
According to jail information cited in local reporting, he was booked at approximately 4:45 p.m. and released later that evening after posting $15,000 bond.
His arraignment is scheduled for December 9, 2026, according to court information reported by local news organizations.
An arrest and formal criminal charge do not establish guilt. Horstman is presumed innocent unless and until proven guilty in court.
Sheriff’s Office Initiates Administrative Investigation
The St. Lucie County Sheriff’s Office stated that Sheriff Richard R. Del Toro Jr. authorized an administrative investigation after the agency learned of Horstman’s reported blood alcohol test results on September 9.
Horstman was initially placed on paid administrative leave on September 15, 2026.
Following the issuance of the felony arrest warrant and Horstman’s surrender on October 26, the Sheriff’s Office changed his employment status to unpaid administrative leave in accordance with agency policy.
The department has also confirmed that its internal administrative investigation is on hold pending the outcome of the criminal proceedings.
The Vero Beach Police Department remains responsible for the criminal investigation.
The administrative investigation and criminal prosecution are separate processes. The administrative inquiry concerns Horstman’s compliance with agency policies and employment standards, while the criminal case addresses the allegations filed against him in court.
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Sheriff Richard Del Toro Addresses Arrest
Sheriff Richard R. Del Toro Jr. issued a public statement acknowledging the seriousness of the allegations and the responsibilities of law enforcement personnel.
In the statement released October 26, Del Toro said:
“Our responsibility to uphold the law comes with an expectation that we follow it ourselves.”
He also stated that accusations involving agency employees must be addressed fairly through the appropriate accountability processes.
Del Toro emphasized that the Sheriff’s Office expects professional conduct from its personnel both on and off duty and intends to maintain the standards required to preserve public trust.
The Sheriff’s Office has not announced a final administrative disciplinary determination in the matter.
Timeline of Key Events
Based on agency statements, police reporting and publicly reported court information.
| Date | Reported Event |
|---|---|
| March 1, 2026 | Two-vehicle collision occurs late at night in Vero Beach. |
| September 9, 2026 | Sheriff’s Office receives notification of Horstman’s reported 0.246 blood alcohol concentration. |
| September 15, 2026 | Horstman is placed on paid administrative leave. |
| October 26, 2026 | Felony arrest warrant is issued, and Horstman surrenders to authorities. |
| October 26, 2026 | Horstman posts $15,000 bond and is placed on unpaid administrative leave. |
| December 9, 2026 | Reported scheduled arraignment date. |
Current Status — October 29, 2026
As of October 29, 2026, Horstman has been released on bond and faces a pending felony DUI charge associated with the Vero Beach collision.
The following developments have been publicly reported:
Horstman’s criminal case remains pending.
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Frequently Asked Questions
Who is Tyler Horstman?
Tyler August Horstman is a detective employed by the St. Lucie County Sheriff’s Office in Florida. He was arrested on October 26, 2026, following an investigation into an off-duty vehicle collision.
Was Horstman operating a police vehicle?
Yes. According to investigators, Horstman was off duty but driving an unmarked vehicle owned by the St. Lucie County Sheriff’s Office.
What was his reported blood alcohol concentration?
The Sheriff’s Office reported a blood alcohol concentration of 0.246, approximately three times Florida’s 0.08 legal driving limit.
Was anyone seriously injured?
Yes. According to the police investigation, a woman driving the other vehicle sustained a traumatic brain injury. A child traveling with her was evaluated at a hospital and reportedly was not injured.
Has Horstman been fired from the Sheriff’s Office?
No termination has been confirmed in the reporting reviewed. The Sheriff’s Office reported that he was placed on unpaid administrative leave following his arrest.
Has Horstman been convicted?
No conviction has been identified. His criminal case remains pending, and he is presumed innocent unless proven guilty.
Sources and Reporting
This report is based on information released by the St. Lucie County Sheriff’s Office and Vero Beach Police Department, together with publicly available coverage of the criminal investigation and court proceedings.
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