Two Forest Service biologists conducting wildlife surveys in a remote corner of the Shasta-Trinity national forest found themselves zip-tied in a trailer and held captive for roughly 15 hours after an armed man and his adult son confronted them in early July.
The incident unfolded on July 16 near Gumboot Lake in Siskiyou County when the older suspect, identified in court documents as 49-year-old Joseph Charles Henrichsen, allegedly approached the women carrying an AR-15 and ordered them to place their hands in the air. His 23-year-old son, Phoenix Henrichsen, was present at a nearby campsite where the family was staying.
Federal prosecutors say Joseph forced the biologists into a trailer where he restrained them with zip ties. While one hostage remained secured inside, court records indicate Joseph took the other woman to a nearby lake, where he used her phone to call a U.S. Forest Service ranger and leave a voicemail on another contact's line.
In the recorded message, Joseph described the situation in explicit terms and demanded to speak with an FBI investigator. He told the recipient he wanted to "talk things through."
Siskiyou County Sheriff Jeremiah LaRue initially questioned whether the call represented a genuine threat until a law enforcement drone captured video footage of the campground showing an armed individual and a restrained hostage. The confirmation triggered a rapid mobilization of local sheriff's offices, police departments, and the FBI's hostage response team across the region.
Negotiators began talks with Joseph that afternoon, but discussions stalled over several hours. In the evening, Joseph told approaching officers he possessed a grenade and would detonate it if they continued to advance. As darkness fell and conversations dragged on, Joseph eventually agreed to release both women.
The father and son surrendered peacefully around 2:30 a.m. the following morning without additional incident. Both face two counts of kidnapping a federal employee, charges that carry a maximum penalty of life in prison and a $250,000 fine if they are convicted.
Sheriff LaRue told the Sacramento Bee that Joseph's stated motivation centered on discussing current world events with federal authorities, though the full scope of his grievances remains unclear. The Henrichsens had previously lived in Washington, where Joseph was accused of a hate crime in 2022 for harassing landlords. A judge found him incompetent to stand trial at that time, and the case was dismissed after delays in securing him a hospital bed.
When questioned by authorities in that earlier case, Phoenix described his father as "unstable" and prone to emotional outbursts. The FBI continues to seek public information that might shed light on the circumstances leading up to the kidnapping.
Author James Rodriguez: "Two innocent scientists doing fieldwork became leverage in what appears to be the escalating crisis of a man struggling with serious mental health issues, all because he wanted a conversation with the feds."
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