Who carries out investigation for election-related criminal offenses?

Georgia
LawOn The Prosecution Service in The Republic Of Georgia
Source:http://www.venice.coe.int/webforms/documents/?pdf=CDL(2009)018-e
Article 3. 1. Inaccordance with the rule established by the law the Prosecution Service:
a)Carries out prosecution;
b)In order to exercise prosecution carries out procedural supervision at thestage of preliminary investigation;
c)Conducts full preliminary investigation in the cases envisaged by law;
d)Supervises the precise and homogenous observance of the legal requirements inthe work of the operative-intelligence agencies;