Officials in Austria say a school shooting has left at least 10 people dead in the European nation's second-largest city, Graz. The shooter is also dead.

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,

By Francois Murphy and Max Schwarz 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Thursday described the 21-year-old man who carried out Austria's worst school shooting as an introvert who had largely withdrawn from the outside world before he carefully planned the attack.