Man charged with murder in Pioneer Square stabbing pleads not guilty

Shoreline Community College english teacher Troy Wolff, stabbed to death Friday night in Pioneer Square.

SEATTLE -- Donnell Jackson, charged with first-degree murder in the stabbing death of Troy Wolff, pleaded not guilty at his arraignment Monday morning.

Jackson is being held at the King County Jail; his bail has been set at $2 million.

Wolff and his girlfriend were walking in Pioneer Square after attending a Sounders game on Sept. 13 when Jackson reportedly attacked Wolff's girlfriend, Kristin Ito. Wolff stepped in to protect Ito and Jackson then reportedly stabbed him, causing injuries that led to his death.

When police arrived on the scene, Jackson reportedly told them he suffered from schizophrenia.