GRAZ, Austria (Reuters) -Austrian police on Thursday described the 21-year-old man who carried out Austria's worst school shooting as an introvert who had largely withdrawn from the outside world before he carefully planned the attack.
The Austrian identified by local media as Arthur A. killed 10 people on Tuesday before shooting himself at his former high school in the southern city of Graz, sending shockwaves through Austria, which declared three days of national mourning.
