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NewsWPLG Local 10 – Main FeedAugust 14, 2026Miami-Dade

U.S. Marshals arrest Isabelle Johnson for the murder of Jason Coulthart

U.S. Marshals have arrested 38-year-old Isabelle Johnson in Cottondale, Florida, in connection with the death of Jason Coulthart. Johnson is currently being held in the Jackson County Jail awaiting extradition to Walton County to face murder charges.

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Why It Matters

This arrest marks a significant development in a multi-county homicide investigation that has resulted in the arrests of six individuals for their alleged roles in the crime or in assisting the suspect.

Key Facts

  • Isabelle Johnson (38) was arrested by U.S. Marshals in Cottondale, Florida.
  • Jason Coulthart (43) went missing on May 24 in Niceville.
  • Coulthart's body was discovered in a shallow grave in Walton County on June 25.
  • The Walton County Sheriff’s Office Cyber Crimes Unit developed the information leading to Johnson's arrest.
  • Bobbi Wagstaff (31) was arrested June 26 for possession of a controlled substance and accessory to a capital felony.
  • Martin and Sandra Leaverton (63) were arrested July 1 for accessory to a capital felony.
  • Michael White (74) and Kathleen Morris (59) were arrested July 10 for obstruction and accessory to a capital felony.
  • White and Morris are accused of helping Johnson hide in Santa Rosa Beach until June 30.
  • Johnson is currently held at the Jackson County Jail pending extradition to Walton County.

Who's Mentioned

organizationU.S. Marshals Task Force“Executing the arrest”organizationWalton County Sheriff’s Office“Lead investigative agency”personBobbi Wagstaff“Arrested for accessory and drug possession”personIsabelle Johnson“Suspect arrested for murder”personJason Coulthart“Victim of the homicide”personKathleen Morris“Arrested for obstruction and accessory”personSandra Leaverton“Arrested for accessory”personMartin Leaverton“Arrested for accessory”personMichael White“Arrested for obstruction and accessory”