UN chief demands probe into attack on Sudan aid convoy: spokesman

United Nations chief Antonio Guterres calls for a probe into an attack on an aid convoy in Sudan that killed five workers, which he condemned as a "horrendous act of violence against humanitarian personnel," his spokesman says. "These are violations under international humanitarian law, and we call for an urgent investigation and for the perpetrators to be held to account," Stephane Dujarric tells reporters. SOUNDBITE