Mom of man who killed trooper sentenced

Tammi-Lynne Spofford in court. (File photo)
Tammi-Lynne Spofford in court. (File photo)

LUDINGTON, Mich. (WOOD) — A mother accused of helping her son after he shot Michigan State Police Trooper Paul Butterfield was sentenced Tuesday.

Michigan State Police Trooper Paul Butterfield. (Undated courtesy photo)
(Trooper Butterfield.)

Tammi Spofford will spend between 18 and 60 months behind bars.

Her son Eric Knysz shot Trooper Butterfield in the head during a September 2013 traffic stop in rural Mason County. Butterfield died later that night during emergency surgery.

Knysz was convicted of the murder and was sentenced to spend the rest of his life in prison in April. Shortly after his sentencing, he hanged himself in his prison cell and died a few days later.

In May, Spofford pleaded no contest to being an accessory after the fact in Trooper Butterfield’s murder. Under the terms of a plea deal, an auto theft charge was dropped.

Sarah Knysz, who was with her husband Eric Knysz when Butterfield was shot, pleaded guilty to her involvement in the death late last year and testified against her husband at his trial. She was sentenced in December to between two and five years behind bars.

>>Inside Timeline of the Butterfield murder case

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