Iran's supreme court has ordered a new trial over the 2003 death in custody of an Iranian-Canadian photojournalist, a judiciary official and a lawyer said. Canada has said the original trial over Zahra Kazemi's case, which has soured ties between Tehran and Ottawa, was flawed. Judiciary spokesman Alireza Jamshidi said the supreme court had identified "some formal problems" in the case and also in the qualification of the court which handled it. "The judges of the supreme court have returned the case to a qualifed court in order to remove the problems," Jamshidi said, the official IRNA news agency reported. Iranian-born Kazemi died in a military hospital of a brain hemorrhage after receiving a blow to the head at Tehran's Evin prison. The appeals court upheld the original court's decision to acquit intelligence agent Mohammad Reza Aghdam Ahmadi of Kazemi's manslaughter. But lawyers said it sent the case back for further investigation because others might be involved. "Following our protest at both the preliminary court and the appeal court, the supreme court returned the file to another qualified court to re-investigate the dossier," Mohammadali Dadkah, a lawyer acting for the Kazemi family, told Reuters.