An American self-styled adventurer and Christian missionary, John Allen Chau, has been killed and buried by a tribe of hunter-gatherers on a remote island in the Indian Ocean where he had gone to proselytize, according to local law enforcement officials, in this undated image obtained from a social media on November 23, 2018. @JOHNACHAU/via REUTERS ATTENTION EDITORS – THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. NO RESALES. NO ARCHIVES
