In a press conference a short time after the election and Wiesenthal's revelations, Kreisky said Wiesenthal used "the methods of a quasi-political Mafia." Wiesenthal filed a libel lawsuit (although Kreisky had the power to declare immunity if he so chose), and when Kreisky later accused Wiesenthal of being an agent of the Gestapo, working with the Judenrat in Lvov, these accusations were incorporated into the lawsuit as well. The suit was decided in Wiesenthal's favour in 1989, but after Kreisky's death nine months later his heirs refused to pay. When the relevant archives were later opened for research, no evidence was found that Wiesenthal had been a collaborator.