"I think the first thing is shock, to be honest. I think you can't react the other way. I think everyone in the school is in complete shock," said 24-year-old student Helene Parr, who knows people at the BORG Dreierschützengasse school, where the mass shooting took place.

Austria to observe three days of mourning after a 21-year-old attacker kills at least 10 people at a school in Graz.

A 21-year-old man, Arthur A., committed Austria's deadliest school shooting in Graz, killing 10 before turning the gun on himself. Investigations reveal his introverted nature and obsession with online shooting games.

King Charles and Queen Camilla have sent an emotional message to Austria following the shooting rampage in Graz.

A brutal act of mass violence in Austria has left the nation reeling. On June 9, in the city of Graz, 21-year-old Arthur A. shot and killed 10 people — including eight children — before turning the weapon on himself.