Trygve Slagsvold Vedum, Norway's Minister of Finance, has never had a Twitter account but there were several fake accounts impersonating him on the platform.
According to a report in Norwegian tech site NRKbeta, after one such fake account was given the blue checkmark by Twitter, it sent out tweets opposing his political party's policies, reports The Verge.
"Unfortunately, there was an error in the reporting that caused a fake account to be verified," Anne Kristin Hiuske, the head of communications at the Prime Minister's Office, told NRKbeta.
"The account has now been removed and we have made sure that no more fake accounts have been verified. Furthermore, we are currently reviewing our reporting routines to ensure that this does not happen again," Hiuske added.
Twitter restarted its account verification process in September, saying users who are looking to be verified should keep checking their account settings screen for access to the in-app application.
Since launching the revamped verification programme, Twitter had hit a few snags which forced it to shut down verifications more than once.