On Wednesday, Dec. 24, 2025, Orange County Sheriff’s Department Special Victims Detail (SVD) investigators arrested Jacob Alexander Demmin, 25, of Yorba Linda, following allegations he groomed and had an inappropriate sexual relationship with a minor female.
In Dec. 2025, Special Victims Detail (SVD) investigators were contacted by the victim after she learned that Demmin was still coaching minor children. The victim reported that in 2021, while Demmin was employed as a gymnastics coach at Firestorm Free Running and Acrobatics Gym in Santa Ana and Westminster, he groomed her, engaged in inappropriate communication and had an inappropriate sexual relationship with her while she was a minor.
During the investigation, SVD investigators learned that Demmin currently works as a gymnastics coach at Ultimate Ninjas Gym in Anaheim Hills, Calif.
Demmin was booked into Orange County Jail for PC 286 (B)(1), sodomy with a person under 18 years; PC 288.3(a), contacting a minor with the intent to commit lewd acts; PC 287(C)(2)(A), sexual penetration with a foreign object; PC 647.6(A)(1), Annoy or molest a victim under 18, and PC 261.5(C), unlawful sex with a minor.
Due to Demmin’s access to minors through his employment, SVD investigators believe there may be additional victims. Anyone with information, or anyone who believes they may have been a victim, is urged to contact the Orange County Sheriff’s Department Special Victims Detail at 714-647-7419 or 714-647-7000. Anonymous tips may also be submitted to Orange County Crime Stoppers at 855-TIP-OCCS.
Manly, Stewart & Finaldi is the nation’s leading firm representing victims of sexual abuse by government agencies, physicians, Universities, school districts, churches, and sports organizations. They are the lead attorneys representing victims of former Olympic Team doctor Larry Nassar and secured $880 million in settlements. They were the lead attorneys representing victims of former USC gynecologist George Tyndall, resulting in a historic $852 million settlement. They represented victims in the $660 million settlement with the Los Angeles Archdiocese in 2007 and more than $700 million in settlements against Catholic entities throughout the United States. They were the lead attorneys in a $140 million settlement with the LA Unified School District in the Miramonte cases. The firm has successfully recovered more than 3 billion dollars for its clients through jury verdicts and settlements.
