Porterville bombmaker sentenced to five years

Court sentences Joshua Isgrigg for making a bomb, elder abuse in April and June of 2020

VISALIA – One Porterville man’s attempt at a bomb didn’t end in a bang. Instead it ended in a five year prison term.

Last week the Tulare County Superior Court sentenced Joshua Isgrigg, 33, to five years in state prison after pleading no contest to the following: one count of making a destructive device without a permit, possession of materials to make explosives, one count of elder abuse under circumstances likely to produce great bodily injury and one count of financial elder abuse.

Each count is a felony. Isgrigg pleaded to the charges on Jan. 28, 2021.

On April 5, 2020, Isgrigg was the caretaker of a 64-year-old wheelchair bound family member. Isgrigg grew increasingly angry with the victim, which culminated with him spitting in her face and cursing at her. Isgrigg left in the victim’s car without her permission while she herself crawled to a window yelling for help.

A neighbor heard her and called 9-1-1. While at the hospital, the victim detailed Isgrigg’s perpetual physical and financial abuse. Adult Protective Services and law enforcement became involved in the case. Other family members expressed concerns that Isgrigg was planning violence.

On June 3, 2020, law enforcement was summoned to Porterville City Hall after Isgrigg became irate and used racist statements with city finance employees over his family member’s bills. He left before law enforcement arrived.

Moments later, a motorcycle patrol pulled over an unlicensed and uninsured Isgrigg. During an investigative search of the vehicle, officers found several plastic jugs containing battery acid, as well as semi-crushed hexamine tablets, a 54-pound box of ammonium nitrate and a neo-Nazi flag, among other white supremacist indicia.

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