Article 51 Vienna Convention on Consular Relations
Estate of a member of the consular post or of a member of his family
In the event of the death of a member of the consular post or of a member of his family forming part of his household, the receiving State:
(a) shall permit the export of the movable property of the deceased, with the exception of any such property acquired in the receiving State the export of which was prohibited at the time of his death;
(b) shall not levy national, regional or municipal estate, succession or inheritance duties, and duties on transfers, on movable property the presence of which in the receiving State was due solely to the presence in that State of the deceased as a member of the consular post or as a member of the family of a member of the consular post.
See also: Article 50 Vienna Convention on Consular Relations