A majority of councillors in Dumfries and Galloway have backed a move for a no confidence motion in the Conservative-led administration.
A total of 22 members of the 43-strong local authority signed the call, which has triggered a special meeting for 16 June.
The move came after a number of Conservatives left their political group to form a new party.
SNP, Labour and Democratic Alliance councillors have backed the move which could see current leader Gail Macgregor and depute leader Malcolm Johnstone replaced.
The Conservatives formed an administration in 2023 after the collapse of a previous coalition.
They had 16 members but that fell to just nine when seven councillors quit the group – four to form a group called Novantae and three to create the Dumfries and Galloway Independent Group.
As a result a request was lodged to convene a special meeting of the local authority to consider a no confidence vote in the administration.
Under standing orders, the move must be backed by at least a quarter of councillors.
