Overview

• Emergency crews arrived just before 10 a.m. Sunday after a report of a motorcycle crash at Argyll MX Park in Dixon, California.
• Vacaville Fire Protection District personnel found the rider unconscious above the water in a nearby pond and initiated life-saving measures.
• Despite rapid response by fire crews, officials pronounced the rider dead at the scene.
• Authorities have not released the identity of the rider or determined what caused the crash.
• Investigators remain at the site to collect evidence and reconstruct the circumstances leading to the incident.