A recent development in the Plus Ultra airline investigation is complicating the legal future of former Spanish President José Luis Rodríguez Zapatero. Testimony from a former partner and two high-ranking Plus Ultra officials corroborates indications of his involvement, despite previous denials of mediation with the airline. Anti-corruption investigators acknowledge they didn’t anticipate clarification on this specific point but confirm Zapatero’s capacity for influence reached high levels of decision-making. While the full extent of his potential culpability remains unclear—referred to as an unresolved “X” that could seriously endanger the current government—the evidence strengthens the case against him. The submitted documents bolster suspicions of improper influence. The ongoing probe examines allegations of illicit dealings surrounding the airline and its connections to prominent figures. Further investigation will determine whether Zapatero’s actions constituted any legal wrongdoing.