The attack occurred on a Tuesday at the Dreierschützengasse secondary school, leading to the deaths of six females and three males, along with the additional death of a female victim later in the hospital. Among the deceased were a teacher and nine students, aged 14 to 17, one of whom was identified as a Polish citizen. In response to the tragedy, Austria observed three days of national mourning, including a minute of silence held in memory of the victims, during which the Austrian flag was flown at half-mast across public buildings.

In the aftermath, eyewitness accounts emerged from those affected. One woman shared her heartbreak over the loss of a local boy she had known well. The shooter had resided with his single mother in the Graz-Umgebung District, while his father, of Armenian descent, had been absent since their separation. Both weapons used in the attack, a pistol and a shotgun, were legally owned by the suspect, who was not known to law enforcement prior to the incident.

As investigations continue, measures to enhance security around schools have been implemented, reflecting the community's need for safety amid fear and uncertainty.