The Independent National Electoral Commission (INEC) says thugs snatched Bimodal Voter Accreditation System (BVAS) machines in Katsina and Delta states.
Mahmood Yakubu, INEC chairman, spoke on Saturday while briefing journalists at the collation centre, Abuja on the ongoing general election.
Yakubu said reports from the process nationwide indicated that there have been some challenges.
He said the challenges include problems of logistics and insecurity.
