The pair's departures follow a number of key departures throughout 2024, with somewhat of a mass exodus taking place within the FIA.
FIA president Mohammed Ben Sulayem's leadership has suffered some huge criticism of late, not least because of his body's public swearing row with three-time F1 world champion Max Verstappen.
FIA mass exodus continues in high-profile departure
As compliance officer, Basarri was responsible for filing a report about Ben Sulayem's alleged misdemeanours, following whistleblower accusations.
Now, Basarri becomes the latest in a long string of high-profile departures from F1's governing body.
BBC Sport are reporting that the Italian has been fired as a consequence of FIA president Ben Sulayem 'losing confidence' in him.
Speculation surrounding Wittich's departure led the former race director to reveal that he had not resigned as official FIA statements had suggested, and was instead fired from his position.