The Palestinian Authority on Saturday night released Hebron businessman Saleh Abu Mayala after he had been detained upon his return from the US-led economic conference in Bahrain.
According to Palestinian reports, the decision to release the businessman came following a threatening letter from the US Embassy.
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"We are pleased the PA has released the Palestinian they arrested after attending the Peace to Prosperity workshop," White House envoy to the Middle East Jason Greenblatt tweeted after the release. "We look [forward] to continuing our conversation [with] all who attended the workshop & anyone else who wants a better future for the Palestinians."
Mayala had attended last week's conference in Bahrain with a small group of Palestinian colleagues, led by businessman Ashraf Jabari, who is viewed with deep suspicion by fellow Palestinians and authorities for his close ties to Jewish settlers in the West Bank.
A PA security official said intelligence services detained Mayala in Hebron for interrogation, without elaborating on the reason for the arrest.
Aside from Jabari, the identities of the other Palestinian participants were not publicly announced, though a picture of some of them at the conference was widely circulated on social media.
Another participant, speaking on condition of anonymity for fear of reprisal, said he and the other Palestinian attendees feel they are in "great danger," having been threatened by the PA and on social media.
The PA has boycotted the Trump administration since its 2017 recognition of Jerusalem as Israel's capital and the relocation of the US embassy to the city the following year.
The Trump administration has also halted aid to the Palestinians, pressuring them to resume peace negotiations with Israel.
In Bahrain, Trump's son-in-law and senior adviser Jared Kushner revealed the economic part of the plan, promising $50 billion in projects and investments aimed at lowering Palestinian unemployment, doubling the Palestinian gross domestic product and reducing the poverty rate by 50%.
The PA says the economic plan should not preempt a political settlement.
In its continued protest of the workshop, the PA changed the name of a street in the town of Yatta from Bahrain to Marzouq Al-Ghanim, a Kuwaiti parliamentarian who spoke out against the conference.
