"At this stage, I'm not aware that we will have anyone present," said UN spokesperson Farhan Haq when asked about UN attendance at the conference.
White House's Kushner in Jerusalem for Israeli talks
The spokesperson initially said that the UN's Middle East coordinator, Nickolay Mladenov, had been invited to the June 25-26 conference in Manama, but would not be attending.
He later corrected his statement to say that Mladenov had not been invited.
President Donald Trump's son-in-law Jared Kushner has been drafting the long-awaited peace plan that has already been rejected by the Palestinians, who expect the proposals to heavily favor Israel.
The plan is aimed at providing economic opportunities for the Palestinians, but Kushner has hinted that it will not endorse international calls for the creation of a Palestinian state.
Several UN resolutions have enshrined the two-state solution to the Israeli-Palestinian conflict as the path to a peace settlement.
Palestinians confirm will not attend US-led meeting in Bahrain
The Palestinian Authority has already said it will boycott the Bahrain conference after it cut ties with the US administration over Trump's recognition of Jerusalem as Israel's capital.
UN diplomats say they expect the Kushner plan to fail, but it remains unclear what other course of action could be taken to advance Israeli-Palestinian peace.
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