GRAZ, Austria — A 21-year-old former pupil opened fire at a secondary school in Graz on June 10, 2025, killing 11 people including himself and leaving several others injured in one of the most shocking attacks in Austria’s recent history.

Police and local officials said the suspected gunman entered the Dreierschützengasse high school in the city’s second-largest urban area and began shooting shortly before 10:00 local time. The man later killed himself in a school bathroom. Officials said he was a former student from Graz who did not finish school and was not previously known to police. They also said two legal firearms were used in the attack.

The casualty picture remained fluid through the day. Early reports said at least 11 people had been injured, and a later regional health update said 12 people were being treated at local hospitals. One person remained in critical condition, while five others were listed as seriously injured. Officials also said six females and three males were among the dead. The changing medical tally reflected the speed with which the attack overwhelmed emergency services and the difficulty of accounting for everyone inside the building.

The scene outside the school quickly became a place of grief. Families gathered near the site, and blood donation appeals followed as local authorities tried to support the injured. Police and city officials met relatives and school staff to discuss next steps, while the Austrian chancellor called the shooting a national tragedy and announced three days of mourning. A nationwide minute of silence was also planned, underscoring how far the shock extended beyond Graz.

What made the attack especially disturbing was that it happened in an ordinary educational setting, at an hour when the school would have been full of students and staff. The suspect’s past as a former pupil, combined with the use of legal firearms, turned the incident into a question about access, warning signs and how the attack could have unfolded so quickly. But the evidence packet does not establish a motive, and it does not say whether any prior complaints or threats had been made about the suspect.

Authorities said the shooting could become the deadliest in Austria’s post-war history, which gives the event an added historical weight. For a country that has seen deadly violence before but not at this scale in a school, the attack has become both a national mourning event and an urgent security case. The most important facts are already clear: a school in Graz became a crime scene, a former pupil carried out the attack, and 11 people did not survive. The unanswered questions now belong to investigators, hospital staff and a city trying to understand how a normal school day ended in such devastation.

The investigation is still expected to focus on how the shooter prepared, why he returned to the school and whether the weapons were acquired legally without drawing attention. But before that process can answer any deeper questions, Graz must absorb the immediate human cost. The city’s schools, hospitals and public spaces are now part of a national conversation about security, grief and the limits of what can be prevented.