Police cordon off a school in southwestern Sweden where a masked man armed with a knife and possibly a sword killed a teacher and student.(Jonathan Nackstrand / AFP/Getty Images)
A photo made available by a student shows a masked man posing for a photo with two other students before attacking students and staff at a school in southwestern Sweden on Oct. 22.(AFP/Getty Images)
A student and her mother leave a school in southwestern Sweden after a masked man killed a teacher and student on Oct 22.(Bjorn Larsson Rosvall / AFP/Getty Images)
Swedish police officers take positions outside the Kronan school in Trollhaettan, Sweden, after a masked man killed two people there on Oct. 22.(Bjorn Larsson Rosvall / European Pressphoto Agency)
Swedish emergency services crews work at the scene after a masked man attacked people at the Kronan school in Trollhaettan, Sweden, on Oct. 22.(Bjorn Larsson Rosvall / European Pressphoto Agency)
Police spokesman Thomas Fuxborg speaks to reporters after a school attack in southwestern Sweden on Oct 22.(Jonathan Nackstrand / AFP/Getty Images)
A knife-wielding masked man stabbed four people Thursday at a school in southern Sweden, killing one teacher and a student before being shot dead by police, authorities said. One student said he thought the attacker was in a Halloween costume.
Students fled from the Kronan school in Trollhattan, near Goteborg, Sweden’s second-largest city, as the attack took place in a nearby cafe just after 10 a.m., police said. The school has 400 students, ranging from pre-school to high school.
Police arrived to find one male teacher already dead and two male students -- ages 11 and 15 -- and another male teacher seriously wounded, police spokesman Thomas Fuxborg said. One of the students and the attacker died later at the hospital, authorities said.
Police fired two shots, one of which hit the attacker, a 21-year-old man from Trollhattan, Fuxborg said. The attacker’s motive was not known, he added.
The attacker had at least one large knife and possibly two, including what may have been a sword, according to another police spokesman, Stefan Gustavsson. He said authorities knew the attacker had killed the teacher “because of the wounds he had.”
Investigators declined to be more specific about the weapons used.
Laith Alazze, a 14-year-old student at Kronan, said at first he thought the attacker -- who was clad in black with a mask -- had something to do with Halloween.
“One of my friends walked over to him to challenge him, but when we saw he stabbed him [the teacher], we ran away,” Alazze told Sweden’s TV4.
The attacker had gunshot wounds to his lower chest and died later Thursday at the hospital, officials said.
Police spokeswoman Maria Randsalu said the second victim was a male student, but did not say which one.
The wounded victims all underwent surgery at Norra Alvsborgs Lanssjukhus Hospital. Dr. Lars Spetz told reporters the teacher had been stabbed in the abdomen while the two students, including the one who later died, were stabbed in the abdomen, liver and chest.
“They hover between life and death,” Spetz said of the surviving victims.
Swedish media said school officials held a meeting Thursday morning to discuss teachers’ fears that the school was too open. The Dagens Nyheter newspaper said students must go through a public cafe to reach the school’s cafeteria and other parts of the building.
Swedish Prime Minister Stefan Lofven, who headed to the scene, described Thursday as a “black day.”
“My thoughts go out to the victims and their families, the students and staff, and the whole community that has been affected,” Lofven said. “No words can describe what they are going through right now.”