Agnes Callamard told the Guardian the threat was conveyed in a January 2020 meeting between Saudi and UN officials in Geneva
The UN human rights office said on Wednesday it confirmed the accuracy of published remarks by the independent expert who led an investigation into the murder of Jamal Khashoggi alleging that a senior Saudi official had made a threat against her.
The Guardian newspaper on Tuesday quoted Agnes Callamard, UN expert on summary killings, as saying a Saudi official had threatened, she would be "taken care of" if she was not reined in following her investigation into the journalist's murder.
Saudi officials did not respond to a request for comment. Callamard did not respond when contacted by Reuters.
"We confirm that the details in the Guardian story about the threat aimed at Agnes Callamard are accurate," UN human rights spokesman Rupert Colville said in an email reply to Reuters.
The UN human rights office had informed Callamard about the threat as well as UN security and authorities, he added.
Callamard told the Guardian the threat was conveyed in a January 2020 meeting between Saudi and UN officials in Geneva. She said she was told of the incident by a UN colleague, the newspaper reported.
Callamard led a UN investigation into the October 2018 killing of Khashoggi by Saudi agents at the kingdom's Istanbul consulate. She issued a report in 2019 concluding there was "credible evidence" that Saudi Crown Prince Mohammed bin Salman and senior Saudi officials were responsible for killing the Washington Post journalist and US resident.
She subsequently called for sanctions against Prince Mohammed’s assets and international engagements.
The prince denies any involvement in the killing but has said he bears ultimate responsibility because it happened under his watch.
The alleged threat was made during a meeting between Geneva-based Saudi diplomats, a visiting Saudi delegation and UN officials, the Guardian reported. After the Saudi side criticized Callamard's work in the case, the newspaper reported, one senior Saudi official said he had spoken to people prepared to "take care of her."
"A death threat. That was how it was understood," Callamard was cited as saying. "People that were present, and also subsequently, made it clear to the Saudi delegation that this was absolutely inappropriate."
Callamard has criticized a Saudi court's ruling in September to jail eight people for up to 20 years for the murder, accusing the kingdom of making a "mockery of justice" by not punishing more senior officials.
US President Joe Biden's administration, which has taken a tougher stance on Saudi's human rights record, last month released an intelligence report that said Prince Mohammed approved an operation to capture or kill Khashoggi.
The Saudi government rejected the findings and reiterated that the murder was a heinous crime by a rogue group.
Callamard, whose replacement was announced on Wednesday, is taking up a new post as secretary general of Amnesty International.