Full Breakdown
Samurai Sword Attack Leads to Arrest in Mariposa County
5/28/2026, 11:07:27 AM
Attack at Creekside Apartments
On Saturday, deputies responded to a disturbance at the Creekside Apartments in Mariposa, where 41-year-old Jonathan Mishael Bays allegedly attacked a resident with a samurai-style sword, striking the victim’s head, shoulder, wrist and hand.
Context and Key Figures
Investigators said the altercation occurred during a party where methamphetamine and other drugs were used. Bays, a transient with aliases Mike, Michael and Erin, has been in the area for about a year and faces an Idaho parole-violation warrant for sexual abuse of a minor. The victim, identified through a GoFundMe campaign as 32-year-old Andrew Cooper, suffered a partially severed arm and hand and remains in intensive care.
Timeline of Events
- Saturday – Attack reported; emergency crews airlifted Cooper to a Merced hospital, then to UC Davis Health for surgery.
- Wednesday morning – A coordinated search using drones, helicopters and saturation of known homeless encampments led to Bays’s arrest.
Data and Statistics
Injuries: multiple lacerations to head, shoulder, wrist and hand; partial arm amputation.
Fundraising: GoFundMe has raised $2,834 of a $17,500 goal.
Suspect aliases: Mike, Michael, Erin.
Prior warrant: Idaho parole-violation for sexual abuse of a minor (Nov 2025).
Official Statements & Responses
The Mariposa County Sheriff’s Office announced Bays’s capture via a Facebook post and confirmed the investigation remains active. A public advisory labeled Bays armed and dangerous, urging the public not to approach him. The GoFundMe post, posted by Cooper’s mother, detailed his medical transfers and ICU status.
Verbatim Quotes
- “Bays used the large sword to strike the victim in the hand, wrist, shoulder and head, according to a Sheriff’s Office Facebook post.” — Mariposa County Sheriff’s Office (Facebook)
- “When deputies arrived, they found a person who had been hit with a samurai sword multiple times in the head, shoulder, wrist, and hand.” — Mariposa County Sheriff’s Office (incident report)
- “The victim was flown by helicopter to the hospital to be treated for their wounds.” — Mariposa County Sheriff’s Office (incident report)
- “He is considered armed and dangerous and should NOT be approached.” — Mariposa County Sheriff’s Office (public advisory)
Impact and Community Response
Cooper remains in intensive care; a GoFundMe campaign has raised $2,834 toward his treatment. The deployment of drones, helicopters and saturation of homeless encampments highlights law-enforcement’s focus on quickly neutralizing armed threats.
Conflicting Reports & Gaps
Authorities have not released the victim’s name, relying on a private fundraiser for identification. The Idaho warrant is described only as a November 2025 parole-violation for sexual abuse of a minor, with no further details. No information has been given about additional weapons recovered.
What’s Next
The sheriff’s office continues its investigation, with attempted-murder charges pending. Prosecutors will examine the Idaho warrant and Bays’s aliases. Law-enforcement agencies plan ongoing monitoring of homeless encampments to prevent similar violent incidents.
