If you do not leave the territories of the Member States and the Schengen area within the deadline stated in the decision, and you do not have the right to stay here on any other grounds, you will be in the country illegally. You may then be subject to a re-entry ban. A re-entry ban means that you cannot enter Sweden or any other Schengen country for at least one year from the date on which you left Sweden.
Supervision or detention
If the Swedish Migration Agency judges that there is a risk that you will abscond or otherwise fail to cooperate in preparations for you to leave the country, we can issue a supervision or detention decision. Being placed under supervision means that you must register with the Swedish Migration Agency or the police at certain times while waiting to start your return journey. If you are placed in detention, you will stay in a locked accommodation until your return journey.
Your case can be handed over to the Swedish Police Authority
If you abscond or fail to leave the country voluntarily, the Swedish Migration Agency may hand over the matter to the police, who can enforce the decision by force.