The gunman who opened fire at an Austrian school this week, killing 10 people and taking his own life, was an avid shooter, police in Graz said Thursday.
Michael Lohnegger, head of the Styrian criminal investigation office, described the 21-year-old former student at the school as an introvert who lived a secluded life.
So far, evidence has not indicated a motive, Lohnegger said.
The gunman had no close relationship with the victims and only knew the slain teacher, he added.
During the seven-minute attack on Tuesday, the man was armed with a Glock pistol, a double-barreled shotgun with a sawed-off stock and a hunting knife, according to reports.
Graz is the capital of the southeastern Austrian state of Styria.
