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Ventura County Sheriff's Office
Wednesday August 5th, 2026 :: 04:30 p.m. PDT

Community

Fatal Traffic Collision

Nature of Incident: Fatal Traffic Collision
Report Number: 26-100917
Location: Westlake Boulevard / Cascade Avenue
Date & Time: 08/05/2026 @ 04:23 AM
Unit(s) Responsible: Thousand Oaks Police Traffic Bureau
(S)uspects, (V)ictims, (P)arty, (D)ecedent

City of Residence

Age
(D) Anthony Whiteside   Sherman Oaks
 
55
 
Narrative:
On 08/05/2026, at approximately 0423 hours, Thousand Oaks patrol deputies responded to the area of Westlake Boulevard north of Cascade Avenue, in reference to an injury traffic collision. The initial investigation determined a Cobalt Security Services vehicle was traveling northbound on Westlake Boulevard when it drove onto the center median and collided with a tree. 
 
Ventura County Fire Paramedics and American Medical Response (AMR) responded to the scene and performed life saving measures on the driver. The driver was transported to Los Robles Regional Medical Center. Shortly after his arrival, he was pronounced deceased.
 
The collision is under investigation by the Thousand Oaks Police Traffic Bureau. Anyone who witnessed the collision or has any information about the collision is encouraged to contact Senior Deputy Chris Riggs at (805) 494-8271 or [email protected].
 
Prepared by: Senior Deputy Chris Riggs
 
 
News Release Date: 08/05/2026  
Media Follow-Up Contact: Senior Deputy Chris Riggs
[email protected]
(805) 494-8271
 
 
Approved by: Captain James Sullivan
 
 

Address/Location
Ventura County Sheriff's Office
800 S Victoria Ave
Ventura, CA 93003

Contact
Emergency: 9-1-1
Non-emergencies: 805-654-9511

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