1 The police are obliged to arrest a person and bring that person to the police station if:
a.
they have caught the person in the act of committing a felony or misdemeanour or they have encountered him or her immediately after committing such an offence;
b.
the person is subject to an arrest warrant.
2 They may arrest a person and bring him or her to the police station if, based on enquiries or other reliable information, the person is suspected of committing a felony or misdemeanour.
3 They may arrest a person and bring him or her to the police station if they have caught the person in the act of committing a contravention or they have encountered him or her immediately after committing such an offence in the event that:
a.
the person refuses to provide his or her personal details;
b.
the person does not live in Switzerland and fails to provide security for payment of the anticipated fine immediately;
c.
the arrest is necessary in order to prevent the person from committing further contraventions.