The independent report said the U.N. Relief and Works Agency was in need of critical reforms to ensure it remains neutral, but that Israel had not shown evidence to support its claims that large numbers of staffers were tied to militant groups.

Israel has yet to provide evidence for its accusations that hundreds of staff with the U.N. agency for Palestinian refugees (UNRWA) are members of terrorist groups, according to a review of the agency's neutrality released on Monday that could prompt some donor countries to review funding freezes.