Article 151 — Enforcement.

(1) The enforcement of an order of expulsion shall be the duty of the competent public authority and shall be effected in accordance with the relevant administrative regulations. (2) In the case of a sentence entailing loss of liberty the order of expulsion shall be carried out after the sentence has been served or remitted through pardon or amnesty. (3) In the case of a criminal whose responsibility is limited and when circumstances so justify the penalty may be first enforced and expulsion substituted for the ordinary measures of safety (Art. 130) or treatment (Art. 131). In the case of an irresponsible person expulsion may, if appropriate in the circumstances of the case, be substituted for the measures of confinement or treatment.