Troy Wolff was stabbed in the neck and torso as he tried to defend his 30-year-old partner, who was also attacked Friday night as thousands of people left the Sounders game at CenturyLink Field.
The 44-year-old suspect was arrested on the scene of the stabbing, where he was standing near the victims and holding a knife when police arrived. He dropped the knife and was taken into custody without further incident, Seattle police spokesman Jeff Kappel said.
The suspect was booked into King County Jail on investigation of murder.
"There are indications that the suspect was operating at a diminished mental capacity," Kappel said.
Wolff was the chair of the English department at Shoreline Community College. Wolff's partner, Kristin Ito, was in serious condition at Harborview Medical Center late Saturday afternoon, The Seattle Times reported Sunday (http://bit.ly/17BtLuu).
Wolff and Ito had attended the soccer game at CenturyLink Field and were attacked near Third Avenue South and South Jackson Street, close to the King Street railway station and a few blocks from the field.
At about 10:32 p.m. Friday, Seattle police said SWAT and gang-unit officers responded to a 911 call about the stabbing.
Police said the preliminary investigation indicates that Wolff and Ito were walking together when a man suddenly confronted them with a small knife and began stabbing Ito repeatedly in the torso.
Wolff "attempted to intervene and the suspect turned on him and began stabbing the male victim repeatedly in the neck and torso," the police report states.
Fire Department medics transported both victims to Harborview Medical Center. Wolff died Saturday afternoon.
The Harborview nursing supervisor said then that Ito remained in serious condition. A college news release said she was stable.
During the Friday-night soccer game, Wolff posted a message on his Facebook page celebrating his evening out.
"Cheap seats, great match! Sounders v salt lake for first place.—with Kristin Ito at CenturyLink Field," Wolff posted.
Information from: The Seattle Times, http://www.seattletimes.com