November 10, 2026 – Ventura County Sheriff’s Office officials report that on November 7, 2026, a large gathering took place in the 1300 block of West Potrero Road, in the unincorporated community of Hidden Valley. The event had an estimated attendance of 3,000 or more people. The event coordinator and homeowner had arranged for numerous private security personnel and emergency medical technicians (EMTs) to be present.

During the event, multiple physical altercations occurred. It was reported to Sheriff’s Communications that a male juvenile suspect allegedly slashed another male juvenile with a knife, causing a response from patrol deputies.  Once on scene, deputies and investigators were told a juvenile victim suffered a superficial laceration to the victim’s neck believed to be from a knife. The victim received medical treatment from EMTs at the scene and left the scene before Sheriff’s deputies arrived. Based on the information at the time, the suspect was subsequently booked at the Ventura County Juvenile Justice Center for assault with a deadly weapon.  On November 9, 2026, detectives contacted the victim in this incident, and per their investigation it was determined the victim was not assaulted with a knife, and the injury appears to be from a mutual combat /simple battery.

While deputies were at the original call for service, they witnessed a separate assault in which a male juvenile kicked another individual in the head. Deputies took that suspect into custody, and he was subsequently booked at the Ventura County Juvenile Justice Center for assault. The victim in this second incident received medical treatment at the scene.

A third incident that night involving an aggravated assault near the concert stage, where the victim was participating in a mosh pit when he was knocked to the ground. While on the ground, the victim alleged he was repeatedly punched and kicked in various parts of his body, causing him to lose consciousness. Upon regaining consciousness, the victim left the party.  The victim later reported the incident on November 8, 2026, where he claimed his cellular phone and money were stolen.  Detectives later discovered the victim’s phone was recovered that night and turned into as lost and found at the party.  Deputies observed visible injuries consistent with the victim’s account and returned his phone to him.

All three investigations remain ongoing. The East County Investigations Bureau is seeking assistance from anyone who may have captured video footage of these incidents using a cellular phone or other recording device. Anyone with relevant video footage of the mentioned assaults is encouraged to upload it to a secure server using the link provided.

The Ventura County Sheriff’s Office remains committed to protecting the safety and security of our communities. We will continue to thoroughly investigate criminal activity and take appropriate enforcement action against those responsible for committing crimes in Ventura County.

https://venturasheriffca.evidence.com/axon/community-request/public/26-146404.

Nature of Incident:	Sheriff’s Office Investigates Multiple Assaults at a Large Party
Report Number:	RB# 26-146404
Location:	1300 Block of West Potrero Road, Unincorporated area of Hidden Valley
Date & Time:	11/7/2026 @ 9:52 P.M.
Unit(s) Responsible:	Ventura County Sheriff’s Office - East County Patrol Services, East County Investigations Bureau – Major Crimes Unit and Special Enforcement Unit
(S)uspects, (V)ictims, (P)arty, (D)ecedent		City of Residence	Age
(S) Juvenile Male (S) Juvenile Male (V) Juvenile Male (V) Juvenile Male (V) Male Adult		Simi Valley   Ventura Newbury Park Newbury Park Thousand Oaks	17 17 15 16 20

Ventura County Crime Stoppers will pay up to a $1,000 reward for information, which leads to arrest and criminal complaint against the person(s) responsible for this crime.  The caller may remain anonymous.  The call is not recorded.  Call Crime Stoppers at 800-222-TIPS (8477).

Source: Ventura County Sheriff’s Office