The SNP has lost control of North Lanarkshire Council following an emergency meeting.
A leadership challenge was mounted by Labour following the resignation of council leader Jordan Linden.
The SNP councillor, 27, stepped down after an allegation of sexual misconduct was made against him.
In a vote taken on Thursday, councillors backed Labour’s Jim Logue to return as council leader, despite the party not having a majority on the council.
Labour had controlled the local authority since it was founded in 1996 before losing to the SNP this year.