1) The heirs of the guardian or tutor shall, without delay, inform of his death to the person who is, by virtue of Article 225, to replace him in such functions. 2) In default of such person they shall apply to the court to appoint a new guardian or tutor. 3) Until they have fulfilled their obligations under Sub-Articles (1) and (2) of this Article, they shall remain liable to the minor and third parties.