a linguistic basis. The Golden Temple complex was the main centre of operations of the movement, and important events during the movement that occurred at the gurdwara included the 1955 raid by the government to quash the movement, and the subsequent Amritsar Convention in 1955 to convey Sikh sentiments to the central government. The complex was also the site of speeches, demonstrations, and mass arrests, and where leaders of the movement domiciled in huts during hunger strikes. The borders of the modern state of Punjab, along with the official status of the state's native language of Punjabi in the Gurmukhi script, are the result of the movement, which culminated in the setting of the current borders in 1966. Operation Blue Star The Golden Temple and Akal Takht were occupied by various militant groups in the early 1980s. These included the Dharam Yudh Morcha led by Sikh fundamentalist Jarnail Singh Bhindranwale, the Babbar Khalsa, the AISSF and the National Council of Khalistan. In December 1983, the Sikh political party Akali Dal's President Harchand Singh Longowal had invited Jarnail Singh Bhindranwale to take up residence in Golden Temple Complex. The Bhindranwale-led group under the military leadership of General Shabeg Singh had begun to build bunkers and observations posts in and around the Golden Temple. They organised the armed militants present at the Harmandir Sahib in Amritsar in June 1984. The Golden Temple became a place for weapons training for the militants. Shabeg Singh's military expertise is credited with the creation of effective defences of the Gurdwara Complex that made the possibility of a commando operation on foot impossible. Supporters of this militant movement circulated maps showing parts of northwest India, north Pakistan and eastern Afghanistan as historic and future boundaries of the Khalsa Sikhs, with varying claims in different maps. In June 1984, Prime Minister Indira Gandhi ordered the Indian Army to begin Operation Blue Star against the militants. The operation caused severe damage and destroyed the Akal Takht. Numerous soldiers, militants and civilians died in the crossfire, with official estimates of death of 492 civilians and 83 Indian army men. Within days of the Operation Bluestar, some 2,000 Sikh soldiers in India mutinied and attempted to reach Amritsar to liberate the Golden Temple. Within six months, on 31 October 1984, Indira Gandhi's Sikh bodyguards assassinated her. In 1986, Indira Gandhi's son and the next Prime Minister of India Rajiv Gandhi ordered