Overview

• Jimmy Mack Ray, 27, pleaded not guilty at his arraignment to 13 counts of second-degree robbery and one count of conspiracy.
• Prosecutors allege a coordinated scheme that used stolen vehicles, smashed display cases with pickaxes, and a gun fired to breach a locked door.
• Three adults are charged with robbery and conspiracy with value-based enhancements, and prosecutors say a juvenile is also being prosecuted.
• Investigators say about 20 to 25 people participated and only a small portion of the stolen jewelry has been recovered.
• Police ended risky vehicle pursuits as air units tracked suspects into Alameda County, leading to several detentions and partial property recovery.