UNITED NATIONS - UN Secretary-General Ban Ki-moon said Friday that the panel set up by Israel to investigate the deadly assault on a Gaza-bound flotilla lacks adequate international weight to make the panel credible. "I took note of this announcement," he told reporters, referring to the Israeli panel in which two foreigners have been included as observers. "My position is that there should be international credibility of their investigation. I know that there are going to be two international observers. But what I have heard from most of the countries is that it is not sufficient enough to have international credibility". To investigate the flotilla, Ban had proposed establishing a four- or five-member independent panel, with one representative each from Israel and Turkey, to be led by Geoffrey Palmer, a former New Zealand prime minister, although officially no names have been mentioned. Turkey accepted the proposal while Israel did not, but Ban said he was continuing to discuss his plan with the Israeli government, pressing for the idea that the two inquiries could complement each other. While I believe that they have the capacity to carry on their domestic investigations, at the same time this investigation should have international credibility, the secretary-general said. There would be no point in proceeding with a neutral panel if Israel remained opposed, he added, saying, Without full cooperation, it would be extremely difficult to have a thorough and credible investigation. He said he remained committed to trying to fulfill the Security Councils call for a prompt, impartial, credible and transparent investigation. The UN chief also said that a "fundamental change" was needed in the policy Israel applied to the blokaded Gaza Strip. Israel decided to lift some of the restrictions imposed on crossing points with Gaza, following worldwide criticism of its military raid of the Turkish-led humanitarian flotilla on May 31, which killed nine people onboard one of the three ships. "I am encouraged that the Israeli government is reviewing its policy, and by its recent decision to allow more goods (into Gaza)," Ban told reporters. "Nevertheless, much more is required to really meet the needs of the people," he said. "I continue to call for a fundamental change in the policies that apply to Gaza."