A Stockton man who gunned down a 43-year-old amputee as he sat in his wheelchair has been sentenced to 55 years to life in state prison, closing out a case that leaned heavily on license plate camera technology to crack. Henry Heath, 52, was sentenced on September 21 after being convicted of first-degree murder and personally discharging a firearm causing death in the killing of Derrick Lee Walthall, a North Highlands resident who was fatally shot near South Commerce and West Main streets shortly after midnight on March 31.
According to the San Joaquin County District Attorney's Office, Heath's conviction fell under California Penal Code § 187 for first-degree murder, with the sentence stacked further under Penal Code § 12022.53(d) for personally and intentionally using a firearm to cause death. Stockton police officers who responded to the scene found Walthall suffering from multiple gunshot wounds, and he was pronounced dead there, according to prosecutors cited by Stocktonia News. A Stockton Record article linked from Crime Solvers Central reported that Walthall's killing was Stockton's sixth homicide of 2026.
Surveillance Technology Led Detectives to a North Stockton Motel
Investigators initially identified Heath through his street moniker “Trouble” before using FLOCK automated license plate reader technology to trace the suspect vehicle to a North Stockton motel, where surveillance footage tied co-defendants to the getaway, the district attorney's office said. The technology work paid off on April 7, when Sacramento police and the U.S. Marshals Service assisted Stockton officers in executing a PIT maneuver after co-defendant Amanda Chapple allegedly tried to drive the vehicle away from pursuing law enforcement near Sacramento while Heath rode in the passenger seat.
Prosecutors laid out distinct roles for the two people who helped Heath after the shooting. Brian Hansen assisted by removing and disposing of the suspect vehicle and the firearm, while Chapple provided her own vehicle and drove Heath out of the local jurisdiction in an effort to help him evade arrest, according to the district attorney's office. Chapple was convicted of being an accessory to murder and received five years and four months in state prison; Hansen pleaded guilty to being an accessory to murder and to possessing a firearm as a prohibited person, and he received the same five-year, four-month term.
San Joaquin County Superior Court Judge Seth Hoyt presided over Heath and Chapple's jury trial and sentencing in the case. Hansen had previously pleaded guilty. The firearm enhancement attached to Heath's murder conviction stems from California's “10-20-Life” gun law, which can provide a consecutive sentence of 25 years to life for intentionally discharging a firearm during specified violent felonies that result in death; judges may strike or dismiss a section 12022.53 enhancement in the interest of justice, according to the Shouse Law Group.
FLOCK Cameras Under Scrutiny Even as They Cracked the Case
The same surveillance system that helped detectives track Heath's vehicle has become a flashpoint in Stockton's own city hall. The city expanded its FLOCK Safety camera contract to more than $5 million in March, but the technology drew heightened oversight in September after police officials disclosed that an officer had been separated from the department following internal audit findings of system misuse, according to Stocktonia News.
The Walthall case also lands amid a bumpy year for violent crime statistics in Stockton. Stockton Police leadership reported in February that overall violent crime fell to a 15-year low in 2025, with shooting injuries hitting 13-year lows and annual homicides reaching 6-year lows, per ABC10. That progress gave way to a rockier stretch this year before homicides dropped sharply to just one in August.
