Who carries out investigation for election-related criminal offenses?

Samoa
SamoaElectoral Act 1963
PART V ROLLS, 33, p.48
33. Assistance to be given Commissioner - (1) All members of thePolice shall at the request of the Commissioner assist the Commissioner byinforming the Commissioner of the name of any person who they believe isregistered as a voter but not qualified to be so registered and shall give theCommissioner any information he or she requests relating to the qualificationsof any person for registration as a voter. (2) All members of the Police shallalso assist the Commissioner by making such enquiries and obtaining suchinformation as the Commissioner requests.