Suisun City Declares Emergency After Cyberattack

Emergency in Suisun City

Suisun City, California, declared a state of emergency after a cyberattack disrupted key municipal systems, including 911 call routing, police and fire dispatch, official records, and other city services. Local officials chose to disconnect the city’s entire computer network to contain the incident and protect the investigation.

At a special meeting held Saturday morning, the City Council formally approved the measure and said the cybersecurity incident forced the city’s entire IT network offline. According to the official statement, the attack affected critical public safety operations, although emergency services remained active and there was no report of an imminent threat to the public.

Operational impact

Available reporting agrees that the disruption reached emergency dispatch, records, and other municipal services. KCRA also reported that, after the network shutdown, the city’s online services and some internal operations were temporarily unavailable.

Telemundo Bay Area added that the city was preserving evidence for a federal investigation and that dispatchers were taking calls through Solano County’s dispatch center, while Suisun City police and firefighters continued responding to calls.

Investigation underway

The city said it is working with federal, state, and regional agencies, including the FBI, the Department of Homeland Security, and California OES, to investigate what happened and restore systems. For now, secondary coverage says authorities were still investigating the source of the attack and had not determined which group may have been behind it, or whether any personal or corporate data was taken. That information remains unconfirmed in the available material.

So far, the public documentation cited confirms the operational impact and the containment response, but does not directly establish that the incident was ransomware or identify an actor.