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Indonesia's Vice-President Gibran Rakabuming Raka has submitted his resignation, an aide told the BBC on Wednesday, a move that could further strain the alliance that helped bring President Prabowo Subianto to power. The aide, Budi Arie, said the letter was handed directly to Prabowo, and it remains unclear whether it has been accepted. The resignation follows a Supreme Court ruling that a high-school document Gibran used in his 2024 campaign was invalid, which prompted more than 100 lawmakers to back a parliamentary initiative that could have led to impeachment proceedings. Gibran had argued that his university study was proof he had completed senior high school, and on Tuesday he asked for a chance to challenge the ruling, State Secretary Prasetyo Hadi said. The move comes amid a visible rift between Prabowo and his predecessor Joko Widodo, whose son Gibran was. Prabowo has shifted many Jokowi loyalists into new roles and has shown little interest in Jokowi's Nusantara capital project. Last week, presidential chief of staff Listyo Sigit Prabowo, a long-time Jokowi ally, was arrested on suspicion of wiretapping the president and was sacked a day later. The report added that the free school meals programme is short of funding, and that students protested across the country on Tuesday over the government's handling of issues including the environmental crisis and corruption.