Section 1606. The following are excluded from succession as being unworthy:
(1) the person who is convicted by a final judgment of having wrongfully and intentionally caused the death or attempted to cause the death of the de cujus or of a person having prior right to the succession;
(2) the person who, having prosecuted the de cujes for having committed an offence punishable with death, has himself been convicted by a final judgment for bringing a false charge or for fabricating false evidence.
(3) the person who, having knowledge that the de cujes was murdered, did not give information thereof for the purpose of bringing the offender to punishment; but this does not apply if he has not completed sixteen years of age, or if he is unsound mind so as to be unable to distinguish between right and wrong, or if the murderer is his spouse or any of his direct ascendants or descendants;
(4) the person who, by fraud or duress, has caused the de cujes to make, revoke or change partly or wholly a will concerning the estate or has prevented him from so doing;
(5) the person who, has partly or wholly forged, destroyed or concealed a will.
The de cujes may remove the exclusion due to unworthiness by a pardon in writing.