西班牙最高法院
In June 2020, the public prosecutor's office of the Supreme Court of Spain agreed to investigate Juan Carlos's role as facilitator in Phase II of the high speed rail connecting Mecca and Medina, intending to determine the criminal relevance of events that took place after his abdication in June 2014. As King of Spain, Juan Carlos was immune from prosecution from 1975 to 2014 by sovereign immunity.