Who carries out investigation for election-related criminal offenses?

Myanmar
ThePyithu Hluttaw Election Law
Chapter XVI
Miscellaneous
83. Ifthe polling booth officer finds out that a person has committed or iscommitting an offence prescribed by this Law, he may direct a member of thePolice Force on duty or other responsible security personnel to arrest suchperson.
Source: http://www.networkmyanmar.org/images/stories/PDF3/l3b.pdf