"We are not satisfied about it. There needs to be a time frame for the PSC," said Mohamed Muzzamil, a central committee member of the National Freedom Front (NFF).
The party had deliberated on the matter and a majority view favoured withdrawing their representative in the parliamentary select committee (PSC) over its working, he said.
The government had earlier announced that a parliamentary select committee will look at powers of the 13A amendment of the constitution and strip the provincial councils of land and police powers.
The NFF representative in the committee and Minister of housing Wimal Weerawansa has threatened to quit if the government goes ahead with conducting the northern council election without amending the powers.
"There needs to be a clear agenda and a roadmap for the PSC. Amending police and land powers need to be taken up by the PSC," said Nishantha Sri Warnasinghe, a spokesperson of the Heritage Party.
The opposition has already boycotted the committee proceedings over concerns at attempts to take power away from the provinces.
