A South African court has criticised the government for letting Sudan's President Omar al-Bashir leave the country despite an International Criminal Court arrest warrant. The court asked the public prosecutor to investigate if the government had broken the law. Mr Bashir denies the ICC charge he committed war crimes in Darfur. A court had ordered him to stay in South Africa while it ruled whether he could be arrested. He had gone to South Africa for an African Union summit and the government argued he enjoyed diplomatic immunity. He left the summit early, before the court could rule on this issue. The BBC's Nomsa Maseko in Pretoria says that Judge Dunstan Mlambo suggested there was reason to believe that the South African government had committed a crime by ignoring the court order.