Hundreds lined the central square in Graz, Austria, for a minute of silence for the 10 people killed in a school shooting on June. In a search of the shooter’s home, investigators found a farewell letter,

Students were sitting in their classrooms at a secondary school in Graz when a 21-year-old Austrian man shot dead nine people, before killing himself.Twelve people were injured in Tuesday morning's violence,

A former student killed 10 people and then himself in a shooting in Graz on Tuesday, the police said. The authorities said a pipe bomb and a “farewell letter” were found at the shooter’s house.