Five masked gunmen targeted the Security Pacific Bank in Norco, California, executing a bold robbery at the height of the afternoon. The robbers, heavily armed and well-organized, managed to make off with a substantial amount of cash. However, their escape attempt precipitated a violent confrontation with local and state law enforcement. Within moments of the robbery, police arrived on the scene, leading to an intense shootout. The firefight escalated rapidly, with gunfire exchanged both inside and outside the bank, resulting in casualties among police forces attempting to subdue the assailants.

In the aftermath of the shootout, a dramatic high-speed chase ensued as the gunmen attempted to evade capture. This pursuit spanned several municipalities and involved numerous law enforcement agencies, marking it as one of the most significant pursuits in California's history. As police pursued the suspects, over thirty vehicles were involved in collisions, showcasing the chaos on the streets. Throughout this ordeal, two of the robbers were killed, along with one police officer, illustrating the extreme dangers involved in such criminal confrontations.

The incident concluded with the authorities successfully apprehending the remaining gunmen, but the repercussions of this event would resonate throughout the community and the law enforcement agencies that responded. The violent nature of the crime and the aggressive response by police highlighted the increasing risks of bank robberies during this era, as well as the need for improved tactical responses to armed conflicts in civilian settings.