On 16 January 2025, a stabbing took place at a high school in Spišská Stará Ves, a small town in Slovakia near the border with Poland. A 18-year-old student stabbed with a knife and killed a teacher and a fellow student, with one other person injured. The culprit was arrested after the stabbing.

The stabbing took place at a gymnasium on Štúrová street in Spišská Stará Ves on 16 January 2025. At about 12:40 p.m. Samuel Straško, an 18 year old student of the school who studied individually due to a history of violence and harassments against fellow students, came to the office of the assistant principal Mária Semančíková, where he was due to take an exam. Instead of taking the exam, the student dressed all in black and wearing a black ski mask used a tactical knife to stab the assistant principal to death. Afterwards, he continued to the classroom, where he had attended classes before being assigned individual study plan and attacked an 18-year old female student. Another student came to the defense of the victim but was injured by Staško, who later chased down and killed his original targed.

After the stabbing, the perpetrator, a student, fled the scene. The police warned the locals about an armed man being on the loose in town and cautioned residents not to approach him. He was arrested about an hour after the stabbing in a forest near the nearby village of Matiašovce.

School attacks are rare in Slovakia. Nonetheless, in 2020 a 22-year old student killed the deputy principal of the high school he had previously attended and injured five other people and in 2022 a student injured a classmate by attacking her with a knife at a high school in Nováky. International media also noted that the attack came just several months after attempted assassination of the prime minister Robert Fico.

The perpetrator, Samuel Straško was an 18 years old student of the high school in Spišská Stará Ves, where the stabbing took place. As a student, he excelled academically and athletically, having successfully participated in mathematics and German language competitions as well as various sports tournaments. At the same time, he had a long history of verbal and physical attacks against female classmates and was previously expelled from high schools in Lučenec and Kežmarok for repeated violent incidencts.

The most severe incident happened in late 2021, when Staško attacked a female classmate with his fists and caused her injuries, which required medical attention. In February 2022, he received a suspended sentence of 4 months in prison. He was also sentenced for threatening another female classmate with death, but not given any additional sentence because the judge considered the suspended sentence issued in the other case sufficient.

In Spišská Stará Ves, the pattern of violent behavior continued. Straško was removed from an online classroom during the COVID-19 pandemic for sending death threats to a female classmate. He later attacked the classmate by crashing his bike into her on purpose and threatened another female student with murder on a school trip. Due to his violent behavior, the school assigned Straško to an individual study plan, where he studied at home and attended regular exams at the school.

According to his fellow students students and teachers, Straško was an intelligent but troubled student. In addition to repeated outburst of aggression towards fellow students, in particularly female ones, he was known for speaking German and performing the Hitler salute during school breaks. He also repeatedly expressed hatred towards Romani people and women. He also actively sought sadistic content online.

The prosecutor general Maroš Žilinka stated immediately after the stabbing that the perpetrator was "not a tabula rasa", likely referring to his previous violent incidents.

Immediately after arrest, Straško confessed he wanted to kill two other persons in addition to the two victims. He attributed his actions to the alleged conspiracy of the targeted persons to expel him from school and generally ruin his life.

Samuel Straško was accused of first-degree murder as the police deemed his knife attacks premediated and intentional. The judge refused Straško's lawyer please for a parole and ruled the perpetrator will remain in jail for the duration of the trial.

The interior minister Matúš Šutaj Eštok and education minister Tomáš Drucker immediately traveled to Spišská Stará Ves by a helicopter offer condolences and support to the local authorities.

In direct response to the stabbing, the national chief of police as well as the chief of police in Spišská Stará Ves were fired by the interior minister Matúš Šutaj Eštok. According to Šutaj Eštok, the local police failed to take necessary steps to prevent the stabbing from happening. According to the chief of police inspectorate, the school asked the police to investigate the behavior of Straško on 9 January 2025. Nonetheless, the police did not find any crime to be investigated and considered the case "ordinary bullying".

Anna Kromková, the principal of the high school, where the stabbing took place, blamed the parents of the perpetrator for withholding information about his prior violent conduct. According to the principal, the school would never accept the student transfer had it knew about Straško's past.

Hundreds of people attended the funeral mass for the stabbed assistant school principal celebrated by the local bishop František Trstenský.

The president of Slovakia Peter Pellegrini, prime minister Robert Fico, the opposition leader Michal Šimečka, numerous government ministers and MPs from all parties as well as the governor of the Prešov Region Milan Majerský immidiately condemned the stabbing and offered their condolences to the families of the victimes.

Pope Francis also offered his condolences via the papal nuncio Nicola Girasoli. The head of Conference of Slovak Bishops Bernard Bober, also expressed his "spiritual closeness" after the attack.

In a statement, the Slovak student union said "Schools should be a place where young people grow, learn and dream of a better future. Instead, we are witnessing violence and hatred finding their way into our classrooms".