CABAZON (CBSLA.com) — A Riverside County father and his two adult sons were in custody Tuesday after authorities found explosive munitions stored in an underground bunker at their residence.
Bruce Borynack, 49, Zachariah Borynack, 25, and Zephaniah Borynack, 23, of Cherry Valley, were arrested Sunday at a residence in the 10000 block of Nancy Ave. around 9:20 a.m. after authorities served a search warrant on the property, according to the Riverside County Sheriff’s Department.
Prior to serving the search warrant, Bruce and Zachariah Borynack were seen driving away from the residence, authorities said.
A traffic stop conducted in the area of Oak Valley Parkway and Oak View Drive in the city of Beaumont revealed an unidentified number of explosives in the vehicle, according to officials.
Bruce and Zachariah Borynack – who were both suspected of possessing explosive devices – were detained while the Riverside County Sheriff’s Hazardous Device Team (HDT) responded and secured the vehicle with a robotic device, authorities said.
After the vehicle was secure, SWAT officers served the search warrant at the residence. A brief standoff occurred when a male and female refused to exit the residence, authorities said.
The Riverside County Sheriff’s Department Crisis Negotiation Team (CNT) made contact with the occupants and convinced them to exit the residence, which they did.
They were detained without incident, according to authorities. The adult female was later released.
Authorities located an underground bunker with munitions inside while conducting a subsequent search of the property. Due to the amount of explosive devices located, the United States Air Force Hazardous Materials experts and agents from the Federal Bureau of Investigation were called in to assist with the investigation, authorities said.
Bruce, Zachariah, and Zephaniah Borynack were arrested and charged with fourteen counts of Reckless or Malicious Possession of Destructive Device or Explosives.
No additional information was immediately available.