Diplomats running the executive bureau of the court’s governing body said last month the British barrister had an inappropriate sexual relationship with a junior ICC lawyer and should be fired, documents seen by Reuters showed.

On Friday, a ​large majority of the ICC’s 125 member states voted to follow that recommendation.

“The assembly decided by a majority of 82 ​states parties that the elected official, prosecutor, Karim Khan, committed serious misconduct and a serious breach of ⁠duty … and to remove … Karim Khan from office,” the president of the court’s governing body, Paivi Kaukoranta, said.

Khan, 56, denies any wrongdoing.

“Mr Khan ​will challenge the lawfulness and fairness of the decision through all available legal mechanisms,” his lawyer, Tayab Ali, said after the vote.

Khan’s dismissal immediately ​triggers the election process for a new ICC prosecutor who is not expected to be voted in before next year.

“Members of the court acted swiftly and decisively to remove an embattled and discredited official so that the court can move forward with its important work in all the situations on its docket,” ​said Leila Sadat, professor of international criminal law at Washington University.

Renewed US campaign

Khan’s dismissal follows an announcement by the United States ​that it will launch a renewed diplomatic campaign to dismantle the ICC, which it says is a threat to its sovereignty.

During a visit to the ‌Philippines on ⁠Thursday, US Secretary of State Marco Rubio said there were “lunatics and crazies involved in the ICC”, and there was no way any US political or military officials would ever go on trial at the court, reiterating previous criticism.

State Department spokesperson Tommy Pigott welcomed Khan’s removal but said, “he is only one small cog in this irredeemably corrupt institution. Today’s outcome will have no impact on the United States’ plans to dismantle ​the ICC.”

The US, which is ​not a member, has imposed ⁠sanctions on 11 ICC judges and prosecutors, including Khan, citing the ICC’s arrest warrants against radical Israeli leader Benjamin Netanyahu and former defence minister Yoav Gallant, and a past probe into US troops in ​Afghanistan.

While removing Khan helps the ICC’s credibility by showing it has accountability for its own leadership, the ​court has more ⁠hurdles to overcome, said Kyra Wigard, assistant professor of law at Utrecht University.

“The bigger challenge going forward is whether the court can restore confidence internally and externally while maintaining the perception of independence amid intense geopolitical pressure,” she said.

Khan’s accuser spoke publicly for the first time last week ⁠in an ​interview with CNN in which she repeated her allegations that the prosecutor had a non-consensual ​sexual relationship with her.

Lawyers for Khan told Reuters he denied “any sexual relationship of any kind” with the junior lawyer.

Any active ICC warrants will remain in place because only ​ICC judges have the authority to withdraw warrants.