12:53 BST
Laura Gozzi
Europe reporter
Gun laws in Austria are generally more liberal than in many places in Europe.
Ownership of rifles and shotguns is permitted for any European citizen over 18, although they have to register the weapons with the authorities within six weeks and are subject to a three-day cooling-off period.
Handguns such as pistols, revolvers and semi-automatic firearms can only be purchased by people over 21 who hold firearms licences.
In general anyone who wants to own a weapon needs to give a reason for the purchase, which can be sports shooting or self-defence. A psychological assessment may be required but is not compulsory.
According to the 2017 Small Arms Survey, Austria has about 30 guns per 100 people – making it the 14th country in the world for gun ownership.