Who prosecutes election-related criminal offences?

National Prosecution Authority Act, 2010 (No. 34 of 2010)

s 8(2): [...] the functions of the Director of Public Prosecutions are to institute and undertake criminal proceedings against any person before any court, other than a court martial [...] 

Electoral Act, 2006 (No. 6 of 2006)

http://www.zambialii.org/files/zm/legislation/act/2006/12/ea2006103.pdf

s 2: 'Commission' means the Electoral Commission of Zambia established under the Constitution.

s 3: (1) This Act shall be administered and enforced by the Commission; Provided that in the exercise of its functions under the Constitution and this Act, the Commission shall not be subject to the direction or control of any other person or authority. 

(2) In order to ensure compliance with the provisions of this Act the Commission shall appoint such number of officers as it may consider necessary. 

(3) Every officer shall be provided with a certificate of appointment which shall be prima-facie evidence of the officer's appointment as such. 

(4) An officer shall, on demand by a person affected by the exercise of the powers of the officer under this Act, produce for inspection the certificate referred to in subsection (3). 

(5) The Anti-Corruption Commission shall investigate and prosecute any corrupt practice committed under this Act in accordance with the Anti-Corruption Commission Act. 

(6) The Zambia Police Force shall enforce law and order at a polling station and undertake any criminal proceedings, subject to subsection (2), in respect of any offence committed by any person in contravention of this Act or any regulations issued under this Act.

s 104: (6) Where it appears to the High Court upon the trial of an election petition that any corrupt practice or illegal practice has

been committed by any person in connection with the election to which the election petition relates, the High Court shall, at the conclusion of the proceedings, prepare a report ... 

(7) The Registrar shall deliver a copy of every report prepared by the High Court under subsection (6) to—

            (a) the Commission; and

            (b) the Director of Public Prosecutions.

(8) The Commission shall, as soon as it receives the report under subsection (7), instruct an officer to prosecute any person stated in the report.