Despite reassurances from Rome, doubts remain over whether a Canadian nurse, an Italian doctor and a French aid worker have been released by kidnappers in Sudan’s Darfur region.Italy’s branch of the aid organisation Medecins Sans Frontieres said the trio, alongside a freed Sudanese national, were heading for El Fasher in north Darfur. Italy’s Foreign Ministry confirmed their release. But the Belgian section of the medical charity, which the hostages worked for, has not been able to do so. Their kidnap on Wednesday followed Sudan’s expulsion of more than a dozen aid organisations. This, after the International Criminal Court decided to issue an arrest warrant against the country’s president Omar Hassan al-Bashir over accusations of war crimes in Darfur.