Who prosecutes election-related criminal offences?

Criminal Procedure Code of Ukraine (1. Date not specified, butchecked the authentically Ukrainian version, and it seems up to date as of2013)

Sources: http://www.en.pravo.org.ua/files/Criminal%20justice/CPC.pdf

http://legislationline.org/documents/action/popup/id/16257/preview

Article36. 1. Public prosecutor in the course of performing his duties incompliance with the requirements of the present Code, is independent in hisprocedural activities, and any interference therein on the part of persons whohave no legitimate authority, shall be forbidden. State authorities, localgovernment authorities, enterprises, institutions and organizations, officialsand other natural persons shall be required to execute legitimate demands andprocedural decisions of a public prosecutor.

2. Public prosecutor, while supervising the compliance with lawduring pre-trial investigation in the form of providing procedural guidance ina pre-trial investigation, shall have the right to:

1) start pre-trial investigation if grounds specified in thepresent Code are present;

3) assign pre-trial investigation agency to conduct pre-trialinvestigation;

4) assign investigator, pre-trial investigation agency to conductwithin a time limit set by the public prosecutor, investigatory (detective)actions, covert investigatory (detective) actions or other procedural actions,or give instructions in respect of conducting such actions, or participate inthem, and where necessary, conduct investigatory (search) and proceduralactions in accordance with the procedure set forth by this Code;