Digital search in Hall sheriff’s DUI case yields no evidence

HALL COUNTY, Ga. — New court records show Georgia State Patrol investigators used an uncommon digital forensic technique in the DUI case against Hall County Sheriff Gerald Couch, but the search produced no evidence.

More than three months after Couch’s Feb. 27 arrest, investigators obtained a warrant to search the infotainment and telematics system in his county-issued Chevrolet Tahoe. The vehicle’s electronic hardware later underwent a specialized forensic “chip-off” examination by the U.S. Secret Service.

“The Chip-off was successful. However, there was no data on the chip,” U.S. Secret Service forensic examiner P. Mitch Mitchell wrote in his report.

Mitchell added that the report “contains no evidentiary data.”

Now Georgia reached out to Mitchell for comment about the technique and timing of the search, but he did not respond.

‘Not standard’ practice

Couch was arrested after Hall County deputies reported seeing his Tahoe failing to maintain its lane. The Georgia State Patrol (GSP) took over the investigation and charged Couch with DUI, failure to maintain lane, and open container.

All three charges are misdemeanors.

A Now Georgia review of Georgia law, state DUI training materials, appellate cases and Georgia Department of Public Safety reports found that vehicle infotainment forensics are documented in serious criminal investigations but are difficult to find in misdemeanor DUI cases.

Lt. Cameron Parker said the Hall County Sheriff’s Office has not used the technique in such a case this year.

“The Hall County Sheriff’s Office has sought zero search warrants for vehicle infotainment units for a stand-alone DUI charge for 2026,” Parker told Now Georgia.

A former Georgia State Patrol trooper, who asked not to be identified, described the warrant and delayed search as “not standard” in a routine DUI investigation.

Typical uses for digital forensics

GSP’s 2021 annual report says its Specialized Collision Reconstruction Team used Berla vehicle-forensics technology to assist the Barrow County Sheriff’s Office with a shooting and aggravated-assault investigation. Other GSP teams recovered vehicle GPS or electronic evidence in triple-murder and murder investigations.

The agency’s 2023 annual report says investigators recovered forensic vehicle data from a rental car connected to “several jewelry robberies across the Southeast.” It also reported Berla acquisitions from vehicles associated with criminal activity.

Georgia appellate cases involving electronic vehicle data generally concern fatal crashes, vehicular homicide, or felony cases. Georgia law allows investigators to seek such evidence in a misdemeanor case when a judge finds probable cause.

The timing of it

Investigators executed the search June 15, one day before Couch returned to active duty following his suspension. The U.S. Secret Service’s Atlanta Field Office examined the electronic module June 23. Prosecutors later provided the search warrant documents and forensic results to Couch’s defense through supplemental discovery.

Investigators may continue collecting evidence while a case is pending, and the timing does not establish wrongdoing or an improper motive.

Empty chip

Depending on the vehicle and its equipment, infotainment systems can retain navigation history, paired-device information, contacts, calls, messages, and other electronic records. A chip-off examination involves physically accessing a component’s memory to attempt to extract its contents.

The records do not explain why the chip contained no recoverable data. They also do not indicate whether it previously held data, whether the system stored the information investigators sought, or whether any information had been removed or overwritten.

Couch has pleaded not guilty, and the charges remain pending. His attorney, Blake Poole, told Now Georgia he has no comment while the case continues through the judicial system.