A motion calling for the resignation of south Belfast DUP councillor Ruth Patterson is set to be brought before Belfast City Council.
Sinn Fein councillor Niall O Donnghaile has confirmed that the party will raise the motion at the council's next full meeting on the basis the Mrs Patterson's behaviour is below what is expected of a councillor.
The Balmoral representative was recently charged by police for sending a "grossly offensive communication" after she made comments on Facebook about last weekend's contentious republican parade in Castlederg, Co Tyrone.
The 57-year-old responded to a comment on a Facebook post about an imaginary attack on the parade where leading figures in Sinn Fein were killed.
Mrs Patterson later apologised but was questioned by police and charged.
Mr O Donnghaile said that the council party had discussed the issue and felt that it was an matter for the full council to examine what exactly was expected of all councillors.
"Belfast City Council has a great reputation for its work across Belfast in the last few years the Investment Plan, the MTV Awards and many more including the World Police and Fire Games and their is a standard expected of us as councillors and how we represent ourselves."
It is not yet clear how the other parties are likely to respond to the move.
Former deputy lord mayor Councillor Patterson was unavailable for comment at the time of going to press.