SJB MP Lakshman Kiriella said disciplinary action would be taken against Harin Fernando and Manusha Nanayakkara for taking oaths as Ministers.
The SJB last week made a collective decision not to accept ministerial portfolios and to offer conditional support to the government.
Today, however, Fernando and Nanayakkara were among the nine new ministers who took oaths before the President.
Fernando and Nanayakkara were among the harshest critics of the President when they were in the opposition.