An inquiry panel has handed over a preliminary report to U.N. Secretary General Ban Ki-moon on Israel's assault on a Turkish ship taking aid supplies to Gaza, which left nine dead and many others wounded, Ban's spokesman Martin Nesirky said on Thursday. Former New Zealand Prime Minister Geoffrey Palmer and a panel which includes representatives from Israel and Turkey are looking into the May 31 attack. Nesirky did not give details of the report but said the inquiry was proceeding in "in a positive and collegial manner." "The panel agreed that in the light of the information so gathered, it would examine and identify the facts, circumstances and context of the incident and make findings and recommendations for the prevention of similar incidents in the future," he said.