A United Nations Human Rights Council investigation says the Israeli military broke international law during its raid on an aid flotilla bound for Gaza.
The three-member panel says Israel's military response to the flotilla was disproportionate and betrayed an unacceptable level of brutality.
Israel insists that its soldiers acted in self-defence during the raid on 31 May, when nine Turks were killed on board a ship as it tried to break a naval blockade of Gaza.
The report by the UN panel also says the blockade was 'unlawful' because of a humanitarian crisis there at the time.
Israel has not yet made any comment.