Teacher and student dead, 2 seriously injured after stabbing attack by masked man at Sweden school BY Jason Silverstein NEW YORK DAILY NEWS Updated: Thursday, October 22, 2015, 9:37 AM A A A Share this URL Splash/Kamerapress/IBL-AOP/Splash/Kamerapress/IBL-AOP Police hold back a panicked onlooker outside the school. A masked man fatally stabbed a teacher and student and seriously injured two others in a school in Sweden before police shot him Thursday morning. The attacker, 21, entered a school in the industrial town Trollhättan around 10 a.m., clad in black and armed with a knife or sword, police said. Several students told local media they did not initially see him as a threat and thought he might have been dressed for Halloween. “When we first saw him we thought it was a joke,” one student told reporters. “He had a mask and black clothes and a long sword. There were students who wanted to go with him and hold the sword.” Once he started his stabbing attack, terrified students took cover in classrooms and cupboards. "One of my classmates' sisters called her to warn her that there was a murderer at the school," a teenage student told The Local. "So we locked the door to the classroom, but our teacher was still outside in the corridor. We wanted to warn him, so a few of us went outside and then I saw the murderer, he was wearing a mask and had a sword. Our teacher got stabbed. The murderer started chasing me, I ran into another classroom. If I had not run, I would have been murdered. I’m feeling really scared. Everyone’s scared here." Police stormed the school and fired two shots, one of which hit and injured the attacker, authorities said. He is being treated at a hospital. Previous Next Enlarge He carried "at last one knife-life object" and another weapon with him in the school, police said. A teacher was found dead at the scene, and a student later died in a hospital. Another teacher and another student were stabbed in the abdomen and are undergoing surgery, police said. The school has about 400 students, ranging in age from 6 to 15. Officials there held a meeting Thursday before the attack to discuss concerns about the building, which includes a cafe for the public, being too open to strangers. School attacks in Sweden are rare, with this being the first one since a fatal shooting in 1961, according to local reports. "This is a dark day for Sweden," prime minister Stefan Löfven said in a statement. "I am thinking of the victims and their families, pupils and staff, and the whole affected community. Words cannot describe what they are going through right at the moment. We feel for them, and we will make sure that they get all the support they need."