Thailand's Prime Minister Abhisit Vejjajiva has said his government and the military remain unified in the face of the red-shirt political protests. He was speaking in a televised broadcast after the country's army chief said parliament should be dissolved to end the crisis. Early elections are a central demand of the protesters, camped out in Bangkok. Abhisit also said an investigation would take place into weekend violence which left 21 people dead. Seventeen of those killed in Saturday's violent clashes were civilians. Four policemen were killed and about 800 people were injured. Abhisit blamed "terrorists" for inciting the unrest, and stressed what he called good co-operative work between the government, the army, the police and the coalition parties. But the remarks by the commander in chief of the armed forces, General Anupong Prachinda, that parliament could be dissolved suggests that divisions within the armed forces and the government persist, correspondents say.