The Constitution Court has ordered the 416 lawmakers and cabinet ministers who voted in support of charter amendment drafts to justify their decision.
Critics have slammed the move as an attempt to meddle with the legislature’s authority.
The instruction came after the charter court accepted yellow shirt co-leader Chamlong Srimuang’s petition questioning if the charter rewrite proponents might have violated Section 68.
Section 68 involves the upholding of democratic rule with the King as head of state and allows judicial intervention in a case where an attempt to overthrow the constitutional monarchy is suspected.