If an applicant who has been given a final refusal does not want to leave Denmark voluntarily, the police will be responsible for arranging the return journey. The Danish Return Agency only deals with voluntary departures.
The North Zealand Police, Udlændingecenter Nordsjælland (UCN), is responsible for specific case processing in aliens' cases. The police website contains statistics on police activities regarding rejected asylum seekers.
You will find statistics regarding police involvement in deportations here (site is in Danish):
The Danish Prison and Probation Service runs the Danish prisons, and an asylum seeker can be deprived of their liberty under the Penal Code if they have committed a crime.
In addition, the Danish Prison and Probation Service runs the Aliens Center known as Ellebæk, where asylum seekers can be detained if deprived of their liberty under the Danish Aliens Act, for example in connection with enforced deportation.
The Danish Prison and Probation Service also runs Departure and Removal Centers at Sjælsmark and Kærshovedgård, where asylum seekers can be accommodated while waiting to be sent out of Denmark. This applies both to departures to the country of origin in the event of a final refusal of asylum, and departures to another European country (under the Dublin or rejection procedures).
A refugee whose residence permit is revoked due to criminal activity, or who is excluded from obtaining a residence permit as a refugee due to crimes or acts of war, but who cannot be sent back to their home country because of a risk of persecution, will be granted what is called a “tolerated stay” in Denmark.
As a rule, all persons on tolerated stay in Denmark are obliged to stay at Kærshovedgård Departure and Removal Center. Asylum seekers who have been finally refused asylum but do not want to cooperate regarding their departure are not on tolerated stay, but they may also be required to stay at Kærshovedgård.