Investigators say an armored-car employee was robbed at gunpoint as she exited the bank and was making her way back to the armored car.
Two suspects got away with an undisclosed amount of cash.
A third suspect was waiting for them in a white Jeep Cherokee which was found abandoned a short time later.
Police say the two suspects that approached the armored-car employee wore masks.
No description was released by police.
The suspects never entered the bank, and no one was injured during the robbery.
Anyone with information is asked to contact Riverside investigators at (951) 353-7135.