There have been allegations including from US officials that the Peoples Mujahedin Organisation of Iran (PMOI) is supported by Mossad. The PMOI is listed as a terrorist organisation that has carried out terrorist activities against Iran. According to the prosecution, Judge Eric David had written a legal opinion that the PMOI be removed from the list of terrorist organisations.
Amicus curiae Jason Kay appointed under Article 15 of the Charter, raised the point that the allegations were not supported by clear evidence. And that perceived bias does not amount to actual bias. The Prosecution further argued that there must not even be any perceived bias on the part of any judge of the tribunal in deciding a case.