The army chief reacted as the supporters of the United Front for Democracy against Dictatorship (UDD) protested at the office of the Constitution Court in Bangkok's Chaengwattana Government Complex for nine days amid tight security.

The pro-government protesters from the so-called "People's Radio for Democracy" group demanded the resignation of all nine judges for allegedly interfering with the duties of the legislative branch after the Court accepted a petition against the move by 312 lawmakers to amend Section 68 of the Constitution.

The petition was submitted earlier to the Constitutional Court by a group of senators.

Protest leader Pongpisit Kongsena, alias Lek Bandon, said that the Red Shirts would protest there until all the judges resign. The protesters are ready to intensify the protest if their demands are not met.

Gen Prayuth said that the army was concerned about a possible confrontation between political factions but as of now the army has not been assigned by the government to supervise the security there.

The army chief urged the protesters to comply with the law, warning that anyone who violates the law will face legal action.

Meanwhile, some 100 activists of the so-called Homeland Protection Organization of Thailand and the group "Thais Love Peace" group also appeared outside the court to show their support for the nine judges.

The counter protesters submitted their statement to the judges via Ms Atthaporn Laohasurayothin, director of the Administrative Staff Group, urging the judges to continue their duties.

The group presented red roses to the judges via Ms Atthaporn and sang a song to boost the judges' spirit.