WWMT - wwmt.com - Search Results The following is an archived video story. The text content of that video story is available below for reference. The original video has been deleted and is no longer available. State Police confirm death of Tpr. Butterfield's fatherMASON COUNTY, Mich. (NEWSCHANNEL 3) - The father of a slain Michigan State Trooper has lost his battle with cancer, Newschannel 3 learned Friday.Sources with the Michigan State Police confirmed that Paul T. Butterfield, a former state trooper, and father of Paul Butterfield passed away Friday.The younger Butterfield was shot and killed in a traffic stop in Mason County last September.In early April, 20-year-old Eric Knysz was sentenced to life in prison in Trooper Butterfield's shooting death.Just days later, Knysz was found after having attempted to hang himself in his cell.He remained on life support for a handful of days before it was removed on April 17.