He accused certain MPs and local government members of having double standards by working with other leaders while claiming to be SLFPers.
A decision will be taken with regard to those who remain on the fence, he warned, adding that those who loved the party should join hands with its leader.
After being elected by SLFP votes, they cannot work to strengthen Podujana Eksath Peramuna, said Dissanayake.
If anyone wants to become activists of that party, they should first resign from the SLFP, he advised.
If party decisions are disregarded?
Meanwhile, UPFA general secretary Mahinda Amaraweera says disciplinary action will be taken against the north central provincial councilors who act against party decisions.
Speaking at a public rally in Walasmulla yesterday (14), he said politicians of the UPFA could take their own decisions after leaving the party only.