Zambian opposition leader Brian Mundubile has announced he will contest the results of the 13 August presidential election in court, alleging "serious irregularities" in the counting and transmission of votes that returned incumbent President Hakainde Hichilema to power with roughly 60 per cent of the vote. The challenge follows a turbulent post-election period marked by the arrest of senior opposition figures, the fatal shooting of opposition MP Mutotwe Kafwaya during a security-force raid at Mundubile's home, and a temporary suspension of vote-counting due to reported violence against polling staff. UN human rights chief Volker Türk has called on Zambia (a landlocked southern African nation) to end arbitrary detentions and guarantee due process, while Mundubile, issuing statements from an undisclosed location, says he requires protection amid unspecified threats to his safety.