ANDERSON, Calif. — Multiple firearms and thousands of rounds of ammunition were recovered in Anderson, Calif., following a tip and subsequent investigation that led to an illicit cannabis cultivation operation and underground bunker.
In December 2025, the California Highway Patrol (CHP) Northern Division Canine Unit received information about a suspected illegal marijuana cultivation operation on a property in Anderson. After securing a search warrant, CHP Air Operations conducted an overflight of the area, further confirming the information received.
Following an approximate month-long investigation, members of the CHP Northern Division Warrant Service Team executed a search warrant at the property on January 20.
During the search, officers discovered an underground bunker accessible through a 100-foot-long culvert. The bunker was equipped with power, ventilation, a concrete floor with built-in drainage and the necessary supplies to cultivate marijuana.
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. 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.
“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. I am proud of the tireless work of our Northern Division personnel that led to this arrest.”
-CHP Northern Division Chief John Pinoli
Michael Jay Kamfolt, age 40, of Anderson, was arrested and booked for the following:
- 30605(a) PC – Possession of an Assault Rifle
- 30600(a) PC – Manufacturing of an Assault Rifle
- 33215 PC – Manufacturing of a Short Barreled Rifle
- 32625(a) PC – Possession of a Machine Gun
- 32625(b) PC – Converting a firearm into a Machine Gun
- 23920 PC – Possession of an Altered Firearm Serial Number
- 24610 PC – Manufacturing and Possession of an Undetectable Firearm
- 496(a) – Possession of a Stolen Firearm
- 29180(b) PC – Manufacturing of a “Ghost Gun”
- 30315 PC – Possession of Armor Penetrating Ammunition
- 32310(C) PC – Possession of High Capacity magazine
This investigation is ongoing as detectives continue to follow up on additional leads.
The mission of the CHP is to provide the highest level of Safety, Service, and Security.
