Who carries out investigation for election-related criminal offenses?

Tunisia
Basic Law on Elections and Referendums, 2014
(copy of the law is available upon request)
Article 142
The Authority monitors the decisions of votingstations, central offices and collection centers with regard to voting andvote-counting, investigates the reasons behind discrepancies between the numberof ballots and the number of voters, and rectifies material and arithmeticerrors, if any, in vote-counting minutes. The Authority may repeat thevote-counting in one voting station or more, and may cancel the results in avoting station or in a constituency if it finds that fundamental and decisiveviolations have marred the process of voting and vote-counting.
TheAuthority is to advise the Public Prosecution on suspicion that violations orcrimes were committed during the elections or referendum.