VIENNA (Reuters) – The U.N. Commission of Inquiry on Syria has gathered enough evidence for President Bashar al-Assad to be convicted of war crimes, a prominent member of the commission, Carla del Ponte, said in remarks published on Sunday.

Del Ponte, 70, who prosecuted war crimes in Rwanda and former Yugoslavia, announced last week that she was stepping down from her role in frustration at the U.N. Security Council’s failure to continue the commission’s work by setting up a special tribunal for Syria that could try alleged war criminals.

She has not said when she will leave her post. Asked in an interview with Swiss newspaper SonntagsZeitung whether there was enough evidence for Assad to be convicted of war crimes, she said: “Yes, I am convinced that is the case. That is why the situation is so frustrating. The preparatory work has been done. Despite that, there is no prosecutor and no court.”

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