UN chief should launch international probe over Khashoggi murder: rights expert

United Nations Secretary General Antonio Guterres should launch an international criminal investigation into the killing of Saudi journalist Jamal Khashoggi last October, an independent rights expert said Wednesday.

In a fresh report on the killing, UN special rapporteur on extrajudicial, summary or arbitrary executions Agnes Callamard urged Guterres to "initiate a follow-up criminal investigation into the killing of Mr. Khashoggi to build-up strong files on each of the alleged perpetrators and identify mechanisms for formal accountability, such as an ad hoc or hybrid tribunal.