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Grand Forks Manslaughter Case Declared a Mistrial

Jurors have heard testimony from the accused and witnesses as they weigh whether Sean Tiessen acted in self-defense or committed manslaughter.

  • Justice Lindsay Lyster declared a mistrial on Thursday, August 27, in the Grand Forks manslaughter trial after the jury remained deadlocked following deliberations.
  • Tiessen, 47, faced one count of manslaughter in the death of Joshua Lockwood, 33, following an incident at a shared home on April 16, 2023.
  • During the 12-day trial, Tiessen testified he feared for his life, claiming Lockwood approached him with a hatchet while the jury reviewed audio from the shooting.
  • Lyster instructed the jury on Tuesday that any verdict required unanimity after Crown and defence counsel concluded closing submissions Monday.
  • Tiessen is scheduled to return to the Rossland Law Courts on September 8 for a scheduling appearance as the trial will begin again.
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Grand Forks manslaughter case declared a mistrial

Jury unable to come to a unanimous verdict, next court date scheduled for Sept. 8

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Today In BC broke the news on Friday, August 28, 2026.
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