Davi Nunes Moreira, 14, died in hospital in Planalto, Brazil last Thursday after telling staff he had injected a solution made of crushed butterfly into his leg. Believed to have carried out the dangerous procedure as part of an 'online challenge', Moreira began vomiting and struggled to walk before admitting his mistake. The youngster was taken into hospital by his father and remained in the Vitória da Conquista general hospital for a week, receiving specialised support, before he died.