A former Garden Grove Police Department officer, identified by the Orange County District Attorney's Office as Roberto Machuca, 32, of Riverside, faces five felony counts filed July 29, 2026, in connection with an alleged illegal sexual relationship with a 16-year-old female Police Explorer. Machuca has pleaded not guilty. Bail was set at $100,000, with conditions requiring him to surrender his firearms and passport. A pretrial hearing is scheduled at the West Justice Center in Westminster. No new evidentiary developments have been reported as of July 30, 2026.

According to the OC DA's public release, Machuca is accused of engaging in an unlawful sexual relationship with a minor enrolled in the Garden Grove PD's Police Explorer program. Five felony counts were filed. Independent confirmation of the specific statutory charges beyond the DA's release has not yet been obtained.

Police Explorer programs are youth-oriented law-enforcement career exploration programs, typically serving participants between the ages of 14 and 21. Participants work in close proximity to sworn officers, creating a supervisory relationship that is directly relevant to the charging context.

Machuca is described as a former Garden Grove police officer. It has not been established from available evidence whether his separation from the department preceded or followed the initiation of this investigation.

• Pretrial hearing at the West Justice Center in Westminster
• Any additional charges or co-defendants named by the DA
• Garden Grove PD's official statement regarding internal review or policy changes to its Explorer program
• Whether separation from the department was voluntary, administrative, or investigative in nature