Expulsion of Aliens: aliens residing illegally in Austria are expelled by the police authorities on the basis of an official decision. In the interest of public order, even aliens residing legally in Austria can also be prohibited from residing in Austria or expelled. In such cases, the protection of their private and family life is to be taken into consideration ( Aliens, Laws Relating to).
Further reading#E. Wiederin, Aufenthaltsbeendende Massnahmen im Fremdenpolizeirecht, 1993.