The 2006 Thai coup d'état took place on 19 September 2006, when the Royal Thai Army staged a coup d'état against the elected caretaker government of Prime Minister Thaksin Shinawatra. The coup d'état, which was Thailand's first non-constitutional change of government in fifteen years since the 1991 Thai coup d'état, followed a year-long political crisis involving Thaksin, his allies, and political opponents and occurred less than a month before nationwide House elections were scheduled to be held. It has been widely reported in Thailand and elsewhere that General Prem Tinsulanonda, a key person in the military-monarchy nexus, Chairman of the Privy Council, was the mastermind of the coup. The military cancelled the scheduled 15 October elections, abrogated the 1997 constitution, dissolved parliament and the constitutional court, banned protests and all political activities, suppressed and censored the media, declared martial law nationwide, and arrested cabinet members.

The new rulers, led by General Sonthi Boonyaratglin and organised as the Council for Democratic Reform (CDR), issued a declaration on 21 September setting out their reasons for taking power and giving the commitment to restore democratic government within one year. However, the CDR also announced that after elections and the establishment of a democratic government, the council would be transformed into a Council of National Security (CNS) whose future role in Thai politics was not explained.Bangkok Post, 25 September 2006, Military set to publish interim constitution The CNS later drafted an interim charter and appointed retired General Surayud Chulanont as Premier. Martial law was lifted in 41 of Thailand's 76 provinces on 26 January 2007 but remained in place in another 35 provinces.Bangkok Post, "Thailand lifts martial law in 41 provinces" , 26 January 2007 Elections were held on 23 December 2007, after a military-appointed tribunal outlawed the Thai Rak Thai (TRT) party of Thaksin and banned TRT executives from contesting in elections for five years.

The coup occurred after nearly two years of escalating anti-Thaksin sentiment, particularly in Bangkok. Even long-standing rural supporters of Thaksin reported increasing frustration at the tensions caused by the 2005–2006 Thai political crisis. Civilians were largely supportive of the military coup at the time. The 2006 coup is sometimes called the "unfinished coup" because another army general, Prayut Chan-o-cha, staged the 2014 Thai coup d'état eight years later. This second coup targeted the government of Yingluck Shinawatra, Thaksin's sister, and resulted in the removal of her government. The 2014 coup led to military control of the country for five years until 2019, and Prayut himself remained in power until 2023, a much longer tenure than that of the 2006 coup leaders.

Background Thirteen years before, a conflict in Thai politics between military factions caused the 1991 Thai coup d'état which ended in a bloody violent crackdown in 1992 by the Royal Thai Army and the Royal Thai Police. Thailand promulgated the 1997 constitution of Thailand, the 'people constitution', for the first time in the history of Thailand that both the upper house and lower house were directly elected. The populist Thai Rak Thai Party (TRT), led by Thaksin Shinawatra, won the 2001 Thai general election. After the end of Thaksin term, for the first time in history, he won the 2005 Thai general election by a landslide.

The 2005–2006 Thai political crisis began in October 2005, the website of the newspaper Phoochatkarn ran an article alleging that Thaksin had usurped the Royal powers of King Bhumibol Adulyadej by presiding over the ceremony. This blast, referring to a photo printed in The Nation newspaper, led Sondhi Limthongkul, the owner of Phoochatkarn, to start using We Love the King, We Will Fight for the King, and Return Power to the King as his key anti-Thaksin rallying slogans. This allegation has been repeated in Sondhi's Thailand Weekly live tapings. Sondhi formed the People's Alliance for Democracy (PAD), yellow shirts rallied the masses on the street and attacked Thaksin through his ASTV channel.

Early 2006, amid the Sale of Shin Corporation to Temasek Holdings, Thaksin called the April 2006 election following a mounting campaign of criticism of his financial dealings. The TRT won a majority of seats, partly as a result of the decision by the major opposition parties to boycott the elections led to party dissolution charges against the TRT. King Bhumibol took the unprecedented step of calling the elections undemocratic, and soon after the election was declared invalid by the Constitutional Court. New elections were scheduled for October 2006.

Prelude Earlier planning and rumours

Planning for the coup started about February 2006.The Nation, The persistent myth of the 'good' coup , 2 October 2006กรุงเทพธุรกิจ, พล.ท.สพรั่ง กัลยาณมิตร"วางแผนปฏิรูปการปกครองมาแล้ว 7-8 เดือน", 24 September 2006Thanapol Eawsakul, "The Coup for Democracy with the King as Head of State", Fa Dieo Kan special issue, 2007 Rumors of unrest in the armed forces and possible takeover plots swirled for months leading to the event. In May 2006, General Sonthi Boonyaratglin issued assurances that the military would not seize power. On 20 July 2006, around a hundred middle-ranking army officers said to be supporters of Thaksin were reassigned by the army high command, fueling rumors that the army was divided between supporters and opponents of the prime minister. In July 2006, 3rd Army Area Commander Saprang Kalayanamitr gave an interview in which he stated that Thai politics was below standard and that the kingdom's leadership was weak. He also claimed that Thailand had a false democracy.คมชัดลึก, [มทภ.3ชี้ชาติไร้ผู้นำ ตท.10ย้ำชัดไม่ยึดอำนาจ], 19 July 2006 The public was becoming increasingly alarmed by each fresh rumor. In August 2006, there were reports of tank movements near Bangkok, but the military attributed these to a scheduled exercise.Timeline: From contested elections to military coup, Financial Times, 19 September 2006 In early September, Thai police arrested five army officers, all members of Thailand's counter-insurgency command, after intercepting one of the officers with a bomb in a car allegedly targeting the prime minister's residence.Thai arrests over Thaksin 'plot', BBC News, 7 September 2006 Three of the suspects were released after the coup.The Nation, Car-bomb suspects get bail , 30 September 2006

In December 2006, former National Security Council head Prasong Soonsiri claimed that he and five other senior military figures had been planning a coup as early as July. He claimed that Sonthi was one of those figures, but that Surayud and Prem were not involved at the time.Asia Times, Grumbles, revelations of a Thai coup maker, 22 December 2006

Coup 19 September

On the evening of 19 September 2006, the Thai military and police overthrew the elected government of Prime Minister Thaksin Shinawatra. At the time, the premier was in New York City at a meeting of the United Nations General Assembly. At 18:30, Royal Thai Army Special Forces units moved from Lopburi Province to Bangkok. At the same time, Prem Tinsulanonda, key person of military-monarchy nexus, Privy Council President, had an audience with King Bhumibol Adulyadej, reportedly concerning a merit-making ceremony for Bua Kitiyakara, the King's mother-in-law. By 21:00, the special forces units arrived in Bangkok. Around 21:30, Army-owned television broadcaster Channel 5 ceased scheduled programming and aired songs authored by the king. By this time, rumours started spreading that the military had arrested deputy prime minister in charge of national security Chitchai Wannasathit and Defence Minister Thammarak Isaragura na Ayuthaya, and that Thaksin's son had left the country. National radio, terrestrial TV, cable TV, and some satellite broadcasters were taken off air shortly after. At 21:40, police commandos arrived at the residence of Thaksin. Army tanks soon took position throughout Bangkok. At 22:20, Thaksin declared a state of emergency by telephone from New York. He transferred General Sonthi Boonyaratglin from his post as army commander to a position in the Prime Minister's Office and appointed Supreme Commander General Ruangroj Mahasaranon to take control of the crisis. His declaration, broadcast on television, was cut immediately afterwards.The Nation, Coup as it unfolds , 20 September 2006 At 23:00 Thawinan Khongkran, Miss Asia 1987 and head of public relations for army-owned television station Channel 5,Thailand ruling military uses beauty queen, 26 September 2006 announced on TV that military and police units had Bangkok and the surrounding areas under control:

The junta, initially called the Council for Democratic Reform under Constitutional Monarchy (CDRM), later took the name of Council for Democratic Reform to rule out suspicions about the role of the monarchy.The Nation, CDRM now calls itself as CDR , 28 September

At 23:50, the CDR issued a second statement explaining the reasons for the coup d'état and wished "to reaffirm that it has no intention to become the administrators of the country." The council promised to retain the king as head of state and to return administrative power to the Thai people "as quickly as possible."Text: Thai coup-leaders' statements, BBC News, 2006-09-19, 21:38 GMT

Foreign news channels, such as BBC World, CNN, CNBC, and Bloomberg Television, were reported to have been taken off air,Thai PM 'overthrown in army coup', BBC although foreign broadcasters were still able to broadcast from Bangkok. Telecommunications networks (telephone and the Internet) were operational.

The army declared martial law nationwide, ordered all soldiers to report to their barracks and banned troop movements unauthorised by the CDR. Television footage showed heavily armed troops in M113 armored personnel carriers and M998 HMMWV vehicles on the streets of the city. Many soldiers and military vehicles wore strips of yellow cloth as a symbol of loyalty to the king, whose royal color is yellow.

Junta commander Sonthi confirmed that Deputy Prime Minister Chitchai and Defence Minister Thammarak had been arrested.One night in Bangkok , 19 September 2006 High-ranked civil servants were ordered to report to the council while governmental offices and banks would be closed on 20 September.Associated Press (2006). Thai military moves to overthrow prime minister. Retrieved 19 September 2006.

A few hours after news of the coup broke, BBC News reported that the leader of the coup would be meeting with the king later in the day, although it was unclear at that time what King Bhumibol's position on the coup was.

20 September

By 00:39 a third statement suspended the constitution and dissolved the cabinet, both houses of parliament, and the constitutional court. At 01:30 (20:30 UTC) on 20 September it was announced that Thaksin had cancelled his speech at the United Nations.Thai Military Launches Coup, Takes Power From Prime Minister Thaksin , FoxNews.com, 19 September 2006 He watched his overthrow on television from a hotel in New York. Tom Kruesopon, a TRT member and an adviser to Thaksin, said the premier "has not given up his power. He is not seeking asylum.""Ousted Thai leader Thaksin gets ready to leave US" , channelnewsasia.com, 20 September 2006 At 09:16 General Sonthi announced in a television conference that the military had needed to seize power in order to unite the nation after months of political turmoil:

Shortly after this announcement, Thai TV programmes resumed whilst cable TV partly resumed. However, main foreign news channels (CNN, BBC, CNBC, NHK and Bloomberg) remained blacked out.