Northern California law enforcement wrapped up one of the largest anti-drug operations in recent years, arresting 146 people and seizing nearly 400 pounds of narcotics, along with cash, firearms, and even bomb-making materials.

From Sept. 15 to 19, Operation Folsom Blues brought together the Colusa County Sheriff’s Office, the California Highway Patrol, local police departments, and prosecutors in a sweeping crackdown on trafficking networks. Officials said the scale of the bust underscored both the reach of illicit trade and the coordinated push to disrupt it.

In Colusa County alone, officers confiscated almost four pounds of fentanyl, 360 pounds of marijuana, multiple firearms, ammunition, and more than $63,000 in cash. Ten suspects were taken into custody.

Region-wide results painted an even grimmer picture: 15 pounds of meth, nearly five pounds of fentanyl, over 8,000 counterfeit fentanyl pills, plus heroin, cocaine, psilocybin, and prescription drugs.

Authorities also seized 93 firearms, one stolen vehicle, makeshift prison weapons, a 3D firearm printer, improvised explosives, and a grenade launcher. More than $281,000 in cash was recovered.

Officials credited the joint task force for its rapid pace of interdictions and broad enforcement measures, including 47 probation and parole searches, 37 warrants, and 27 Watson Advisements. The sheriff’s office called the effort “unprecedented” in scope for the region.

The bust sends a clear signal: traffickers may keep adapting, but the dragnet is widening—and fast.

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