One of the world's most infamous ivory traffickers will remain in prison in Tanzania after an appeal judge sent her case back to a lower court. The high court accepted there were anomalies in the original written judgment against Yang Fenglan, but declined her attorney's application for her release. Between 2009 and 2014, poachers reduced Tanzania’s elephant population by 60%, according to a government census. In response, Tanzania developed a strategy of intelligence-led investigations.