Who carries out investigation for election-related criminal offenses?

Nigeria
AN ACT TO REPEAL THE ELECTORAL ACT 2006 AND RE-ENACT THE INDEPENDENTNATIONAL ELECTORAL COMMISSION, REGULATE THE CONDUCT OF FEDERAL, STATE AND AREACOUNCIL ELECTIONS AND FOR RELATED MATTERS, 2010
Trialof offences
150.
(1) Anoffence committed under this Act shall be triable in a Magistrate Court or aHigh Court of a State in which the offence is committed, or the Federal CapitalTerritory, Abuja.
(2) Aprosecution under this Act shall be undertaken by legal Officers of the Commissionor any Legal Practitioner appointed by it.
Interpretation
156.
In this Bill,unless the context otherwise requires—
[…]
'Commission'means the Independent National Electoral Commission
established by theConstitution;