At least 12 people are wounded after a knife attack on a school in the city of Perm in central Russia this morning. The New York Times reports that two masked teenagers—one a current student of the school and the other a former student—entered the back entrance of School 127 at about 10 this morning and broke into a fourth-grade classroom, where they proceeded to stab students and teachers. According to one witness, the teenagers said they were going to "slaughter everyone." Twelve people were taken to the hospital with stab wounds. Two students and one teacher suffered serious wounds. The two attackers were wounded as well.
The motive for the attack is unclear, as are many of the details. Initial reports said the boys started a knife fight in the hallway before the entering the classroom. Some witnesses said the two teenagers attacked the teacher and only slashed at students when they tried to help her, BBC reports. Another witness said one or both of the boys were angered by comments on social media. Police said in a statement that one of the assailants was a patient at a mental hospital. Investigators in the city 700 miles northeast of Moscow said they have detained the two suspects and that they have opened a criminal case, Reuters reports. (Read more knife attack stories.)