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.

A lone attacker has shot dead 10 people at a school in the Austrian city of Graz. Officials say the suspect, who was 21 and had two guns, killed himself in the bathroom. Three days of national mourning have been announced.

Nine students were killed — six girls and three boys aged between 14 and 17, one with Polish citizenship — as well as a teacher, police said. Another 11 people were wounded.