California man arrested after fortified underground bunker found with weapons cache

California

California man arrested after fortified underground bunker found with weapons cache

Michael Kamfolt faces nearly a dozen weapons charges after authorities discovered the fortified hideout during marijuana cultivation investigation

Greg Norman-Diamond Fox News

Published

January 30, 2026 2:35pm EST

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A California man was arrested after authorities said they discovered an underground fortified bunker with an "alarming cache of illegal firearms and ammunition" inside.

Michael Kamfolt, 40, of Anderson, is now facing nearly a dozen weapons-related charges, including possession of an assault rifle and manufacturing of a ghost gun, following his arrest by the California Highway Patrol. He was taken into custody as part of an investigation into a suspected illegal marijuana cultivation operation on a property in Anderson, authorities said.

"This operation went far beyond an illegal grow. The combination of a hidden bunker and an alarming cache of illegal firearms and ammunition highlights the threat posed to public safety," CHP Northern Division Chief John Pinoli said in a statement.

In a search of the property on Jan. 20, "officers discovered an underground bunker accessible through a 100-foot-long culvert," according to CHP.

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Inside of alleged California bunker and tunnel entrance leading to it

The inside of a "hidden bunker" that the California Highway Patrol said was discovered on a property in Anderson. (CHP)

"The bunker was equipped with power, ventilation, a concrete floor with built-in drainage and the necessary supplies to cultivate marijuana," CHP said in a statement.

"In addition to the bunker, officers seized 13 firearms, four soft body armor vests, 30 high-capacity magazines, and approximately 10,000 rounds of ammunition, including armor-piercing rounds," it added. "Among the seized firearms were a sawed-off shotgun, three AR-15 style assault rifles, one with an obliterated serial number, and two firearms reported stolen in 2016 and 1978 respectively."

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California bunker interior and weapons and ammunition allegedly found inside

The California Highway Patrol said a massive weapons cache was found inside the bunker, shown at left. (CHP)

CHP also said they received a tip about the property in December 2025 before returning this month with a search warrant, which "led to an illicit cannabis cultivation operation and underground bunker."

The CHP’s announcement drew plenty of reactions from commenters on Facebook, with one saying in response to their post, "Bros got an absolute dream prep setup."

Tunnel leading to alleged underground bunker in California

A 100-foot-long tunnel led to the bunker in Anderson, the California Highway Patrol said. (CHP)

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"Dude was just preparing for the apocalypse," said another.

Greg Norman is a reporter at Fox News Digital.

California man arrested after fortified underground bunker found with weapons cache