4 jailed in plot that led to young couple found shot to death on their front porch

Four people are now behind bars, charged in the shooting deaths of a young Missouri couple found dead on their front porch last month.

Court documents say that Theresa Cox, the ex-wife of Alex Chute, 28 — who was found dead with his fiancee Brianna Sproul, 30 on November 14 — orchestrated a murder plot with the help of three other, including her new boyfriend and a co-worker at a Springfield Pizza Hut, the Springfield News-Leader reports.

Cox, 27, had her boyfriend, 20-year-old Duncan “Mixxi” Bogle — also a co-worker at the Pizza Hut — carry out the shootings in Willard on either the night of November 13 or the following morning, court documents say. Then, co-worker Matthew Plumb, 43, and  Therin Plumb, an 18-year-old relative, disposed of the gun in a creek, and Matthew Plumb told police Cox was at work on the night of November 13, which appears to have been false.

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The court documents also say that Matthew Plumb helped Cox falsely report her gun stolen a few days before the shootings and that Therin Plumb was going to help with the slaying but backed out.

Police found a gun on the porch next to the couple, but it was not the weapon used in the shootings. It’s not clear where that weapon came from.

The court documents say that Cox and Chute were involved in a custody battle over their 4-year-old daughter, who was found hiding inside the house when police found the couple dead, as CrimeOnline previously reported.

Cox and Bogle were arrested earlier this month in San Francisco, KY3 reported. Cox has been charged with first-degree murder, second-degree murder, and armed criminal action. Bogle has been charged with two counts of first-degree murder, armed criminal action, and endangering the welfare of a child.

Matthew Plumb has been charged with first-degree murder, second-degree murder, armed criminal action, and evidence tampering. Therin Plumb faces a charge of evidence tampering.

Willard Police Chief Tom McClain told KY3 that Cox and Bogle would likely be extradited to Missouri by the end of the month.

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