Shocking video has surfaced of a smash-and-grab robbery at Heller Jewelers in San Ramon, California, where about 20 masked suspects stormed the store.

According to the San Ramon Police Department, the group rushed inside, smashed open display cases, and grabbed numerous high-value items before attempting to flee.

Police say several suspects have since been arrested in connection with the robbery, though the investigation remains ongoing. Authorities are working to identify additional participants and recover the stolen merchandise.

Smash-and-grab robberies have surged across California in recent years, often involving large groups overwhelming stores in coordinated attacks. Local officials have vowed to increase security measures and prosecute those involved to the fullest extent.