WASHINGTON - The Biden administration ruled on Thursday that Saudi Arabia Crown Prince Mohammed bin Salman has immunity from a lawsuit over the murder of Mr Jamal Khashoggi, drawing immediate condemnation from the slain journalist’s former fiancee.

Mr Khashoggi was killed and dismembered in October 2018 by Saudi agents in the Saudi consulate in Istanbul, an operation which United States intelligence believed was ordered by Prince Mohammed, who has been the kingdom’s de facto ruler for several years.

“Jamal died again today,” Mr Khashoggi’s former fiancee Hatice Cengiz said on Twitter minutes after the news became public.

She added later: “We thought maybe there would be a light to justice from #USA but again, money came first. This is a world that Jamal doesn’t know about and me!”

A spokesman for the Saudi consulate in Washington could not be reached for comment on Thursday evening, after business hours.

“This is a legal determination made by the State Department under longstanding and well-established principles of customary international law,” a spokesman for the White House National Security Council said.

“It has nothing to do with the merits of the case.”

The spokesman referred further questions to the State and Justice departments.

In a document filed in the US District Court for the District of Columbia, Justice Department attorneys wrote that “the doctrine of head of state immunity is well established in customary international law”.

Justice Department lawyers said that the executive branch of the US government, referring to the Biden administration, had “determined that defendant bin Salman, as the sitting head of a foreign government, enjoys head of state immunity from the jurisdiction of US courts as a result of that office”.

In late September, Saudi King Salman named Prince Mohammed prime minister in a royal decree, which a Saudi official said was in line with responsibilities that the Crown Prince was already exercising.

“The royal order leaves no doubt that the Crown Prince is entitled to status-based immunity,” lawyers for the Prince said in an Oct 3 petition requesting a federal district court in Washington to dismiss the case, citing other cases where the US has recognised immunity for a foreign head of state.

President Joe Biden was criticised for fist-bumping the Crown Prince on a visit to Saudi Arabia in July to discuss energy and security issues.

The White House said Mr Biden had told Prince Mohammed that he considered him responsible for Mr Khashoggi’s killing.

The Prince, known by his initials MBS, has denied ordering Mr Khashoggi’s killing but acknowledged later that it took place “under my watch”.

Mr Khashoggi had criticised the Crown Prince’s policies in Washington Post columns.

He had travelled to the Saudi consulate in Istanbul to obtain papers he needed to marry Ms Cengiz, a Turkish citizen.

“It’s beyond ironic that President Biden has single-handedly assured MBS can escape accountability when it was President Biden who promised the American people he would do everything to hold him accountable. Not even the Trump administration did this,” said Ms Sarah Lee Whitson, a spokesman for Democracy for the Arab World Now. REUTERS