At least 11 people were killed and several others injured in a school shooting Tuesday in the southern Austrian city of Graz.

A spokesperson for the Graz Regional Hospital told NBC News that 11 people had died following the incident at the BORG Dreierschützengasse school, a secondary school located in the northwest of the city. Police said the suspected perpetrator was among the dead.

Austrian Interior Minister Gerhard Karner said at a press conference Tuesday that nine lives were “taken from us, including six females and three males.” He added that 12 people were also injured. The Graz Regional Hospital said later that a women who was wounded died of her injuries.

The police added that they had identified the suspected shooter as a 21-year-old from Graz, adding that he appeared to have died in the bathroom by suicide.

The shooter used two guns that were later recovered from the school, the police said, adding that there was only one suspect involved in the shooting.

Austrian Chancellor Christian Stocker said Tuesday that the shooting marked “a dark day” in the country’s history.