The organisation further noted that the National Assembly should be guided by due process in any investigation.
The UN resident and humanitarian coordinator in Nigeria, Mohamed Fall, stated this when he led a delegation to INEC headquarters in Abuja.
Mr Amupitan expressed concern over past experiences in the deployment of vehicles during elections.
Mr Amupitan said that a credible voter register remained the bedrock of free, fair and transparent elections.
He called for sustained partnership to tackle vote-buying, rigging, and deliberate falsehoods.
INEC stated that, since the commencement of online pre-registration, by week five (September 21), 5,385,060 Nigerians had uploaded their details to the CVR portal.
He said that there is no sanction whatsoever, concerning breaches for campaigns earlier than 150 days to an election.
INEC has dismissed allegations of irregularities in its online pre-registration data for the ongoing nationwide Continuous Voter Registration.
The supplementary election was necessitated by the initial poll being declared inconclusive.
The INEC chairman pledged the commission’s determination to extend voting rights to inmates in correctional facilities.
