Red shirts have vowed to fight against any attempt to invalidate last Sunday's general election.
Key leaders Thida Thavornseth and Weng Tochirakarn, along with former Pheu Thai MP Vorachai Hema, on Thursday jointly denounced protesters for disrupting the polls.
Thida said the opposition Democrat Party, which boycotted the election, should not have the right to lodge complaints relating to the snap poll.
“There was an attempt to nullify the election for the reason that the polls were not held countrywide on the same day. The Constitution Court was asked to invalidate the polls. This is judicial coup,” she said.
She said domestic and international academics have condemned protesters who disrupted the election for restricting voters’ fundamental rights, calling on all factions to obey the rule of law and refrain from scrapping the Constitution.
Vorachai called on the powersthatbe to stop supporting protest leader Suthep Thaugsuban and abide by the law to prevent a coup.
Independent agencies should not intervene in the attempt to find solutions for the country, he said.
Pheu Thai Party spokesman Prompong Nopparit said he would petition the Constitution Court today to seek legal action against Suthep and key protest leaders, including Phra Buddha Issara who has been leading the rally on Chaeng Wattana Road.
He charged the protesters with violating Section 68 of the Constitution in their obstruction of the general election.
He said the court would also be asked to order the protesters to end their road blockades and seizure of government buildings in Bangkok.