BRUSSELS - The European Union called for an enquiry into deaths aboard Gaza aid ships seized by Israel's navy on Monday and urged Israel to allow the free flow of humanitarian aid to the Gaza Strip. High Representative Catherine Ashton expresses her deep regret at the news of loss of life and violence and extends her sympathies to families of the dead and wounded,” said a spokesperson for Ashton, the EU's foreign policy chief. "On behalf of the European Union she demands a full enquiry about the circumstances in which this happened... She calls for an immediate, sustained and unconditional opening of the crossing for the flow of humanitarian aid, commercial goods and persons to and from Gaza." Meanwhile, Arab League chief Amr Moussa slammed a deadly Israeli military raid on Monday against a boat carrying aid for Gaza as a "crime" against a humanitarian mission. "We condemn this crime, taken against a humanitarian mission and people. They were trying to help people. They were not on a military mission. Everyone should condemn this," Moussa said. "We are now conducting calls to Arabs to decide on our next step," said Moussa, who heads the 22-country organisation based in Cairo.