On November 22, DGP Deepender Pathak, Andaman and Nicobar Police informed Ministry of Home Affairs of India that a man named John Allen Chau who had come to Port Blair on November 16 was killed at in the highly restricted area - North Sentinel Island - whose residents are known for resisting human contact for centuries. As per the local police, no religious material was recovered in his belongings and neither the churches in the area were aware about his presence. His social media was also scanned but nothing appeared out of place. But soon, the police report turned on its head as a Christian missionary group, All Nations, which is based in Kansas, released a statement that said that the 27-year-old was a missionary with the organisation since 2017 and had been training to convert the isolated tribe to Christianity since he was in college. His death made headlines around the world, sparking heated debate about the rights of the remote tribes in the modern world. Not only that, the organisation revealed that Chau spent years \u201ctraining\u201d for his visit to the island. His friend also confirmed that Chau had visited the Havelock Island, which is a part of Andaman and Nicobar island, in 2016 to \u201clearn scuba diving.\u201d Mary Ho, the group\u2019s international executive leader, told Washington Post that Chau learnt emergency medicine, linguistics and cultural anthropology and \u201cwanted to live with them for years and learn the language\u201d of North Sentinelese people. The missionary organization said that Chau was a "seasoned traveller who was well-versed in cross-cultural issues" and "had previously taken part in missions projects in Iraq, Kurdistan and South Africa.\u201d Chau was already researching the North Sentinelese tribe, Remco Snoeij, Chau\u2019s friend told the paper. READ ALSO | Who are Sentinelese? Here's how American John Chau described one of the last isolated tribes in the world Another friend, John Middleton Ramsey, 22, confirmed that the same year Chau lived with him in Washington and that isolated island in the Andamans was on his mind. Ramsay has claimed that Chau avoided romantic attachments \u201cbecause of his planned mission.\u201d Much has been said about his diary and the Andaman police recovered a note which was titled \u201cObservations\u201d from the fisherman who took Chau to the forbidden island. While his notes have been termed immature at best, the notes detailing his first interaction with them, the number of people in the tribe and the topography around their habitat have been shared with the anthropologists. The first day, he saw the tribe, their women began \u201cbooing and chattering,\u201d his notes read, and as men attacked him with bows and arrows, he shouted, \u201cMy name is John, I love you and Jesus loves you,\u201d before he retreated. The second day, he went with gifts of \u201cfish, scissors, cord and safety pins\u201d and sung \u201cworship songs and hymns\u201d but he was attacked again. The third day, after asking the fisherman to drop him at the island again, he didn\u2019t return and the fisherman saw the tribesman taking his body. Police also confirmed that on his final trip to the island, he spent time studying how to evade military patrols around the island. DGP Deepender Pathak further added that Chau had a \u201cvery meticulous plan to camouflage his expedition as fishing activity.\u201d The accounts of his two friends, the missionary group\u2019s statement and the detailed note of Chau\u2019s observations clearly point that the 27-year-old had made elaborate plans to contact the tribe. It is unclear what made Chau loose caution and make repeated unwelcome contact with the North Sentinelese tribe who made it clear that they didn\u2019t want to be contacted. The fishermen who helped him have been arrested by the police. After much effort, the government finally decided to not retrieve Chau\u2019s body, so that the tribe is not disturbed, reported The Guardian.