Who carries out investigation for election-related criminal offenses?

Nepal
- Police
- Special investigator
The Act Made to Amend and Consolidate PrevailingLaws
Relating to Election Offences and Punishment
Chapter-4
Proceeding and Settlement of Cases
23. Investigation and filing of case: (1) The officer designated
by the Commission by a notification in the NepalGazette
shall investigate and inquire into the offensespunishable
under Section 21.
...
5) It shall be the duty of the concerned policeoffice to carry
out the order issued by the investigatingofficer pursuant
to this Section. If the order so issued is notcarried out,
the investigating officer shall write to theCommission for
departmental action against such police personnel.
Source:
http://www.ncf.org.np/upload/files/203_en_Election%28offence&Punishent%29ACT_2063_ENG.pdf