At least 10 people were killed and several others injured in a school shooting Tuesday in the southern Austrian city of Graz, local media reported.

A spokesperson for the Graz police told NBC News that “several people have been killed” at the BORG Dreierschützengasse school, a secondary school located in the northwest of the city.

In a post on X, police said that the perpetrator was among those dead, adding that they were working on the assumption that there was only one suspect involved in the shooting.