as the Republican Forces of Burundi (Forces républicaines du Burundi, FOREBU) and large numbers of civilians fled into exile. Despite the instability and a continuing opposition boycott, the elections took place in July and Nkurunziza was re-elected for a third term. Third term and death, 2015–2020 Nkurunziza's third term saw the country's increasing isolation in light of international condemnation of the repression which accompanied the 2015 unrest. On 4 August 2015, he ordered the police to find the murderers of his ally, Lieutenant General Adolphe Nshimirimana, within ten days who was represented as the right-hand man of the president. The East African Community and African Union attempted to mediate the conflict unsuccessfully and Nkurunziza's regime became increasingly isolated. Fearing an outbreak of genocidal violence, the African Union attempted to dispatch a peacekeeping force to Burundi in 2016 but this was blocked by Nkurunziza. 1,700 civilians were estimated to have been killed in the subsequent repression and 390,000 fled across the border into Rwanda and the Democratic Republic of the Congo. Poverty increased and many middle-class Burundians emigrated. Nkurunziza withdrew Burundi from the International Criminal Court in 2017 and advocated constitutional reforms which would allow longer presidential terms which were approved in a disputed referendum in May 2018. However, in June 2018 he announced that he would not be standing for a fourth term and that he would consequently step down in 2020. The same year, he was given the title of "Permanent Visionary" (Visionnaire permanent) by the CNDD–FDD. In March 2019, three girls were arrested for drawing on the president's portrait. Global outrage, with denunciations from Human Rights Watch and an international campaign on networks under the Hashtag #FreeOurGirls, forced the government, which agreed to release the three girls. Ahead of his resignation, Nkurunziza endorsed Évariste Ndayishimiye as his candidate for leadership of the CNDD–FDD ahead of the elections scheduled for 2020. Ndayishimiye was considered to be a "close ally" and it had been reported that Nkurunziza "wanted to run the country from behind the scenes" after his resignation using Ndayishimiye as a puppet ruler. The elections took place in May 2020 and resulted in a large majority in favour of Nkurunziza's candidate but occurred against the backdrop of criticism of Nkurunziza's response to the COVID-19 pandemic in Burundi in which Nkurunziza expelled representatives of the World Health Organization (WHO) from Burundi. Election monitors from the East African Community were