In addition to arranging the funeral, you must have a Certificate of Inheritance drawn up by a notary. During the preparation of a Certificate of Succession, it is recorded, among other things, who the heirs are and who is responsible for settling the estate.
After a death, it is also wise to inform banks in order to block the accounts.
You can check whether the deceased had a will drawn up at the Central Register of Wills. On the other hand, the content of the will can only be found out through a notary, provided you are an interested party.