Vienna FPÖ files criminal complaint against Mayor Ludwig and former chamber chief Ruck over alleged abuse of office

Vienna, 14 August 2026

The Vienna FPÖ has filed a criminal complaint with the public prosecutor's office against Mayor Michael Ludwig and former Wirtschaftskammer president Walter Ruck, citing alleged abuse of office in connection with disclosed conversation transcripts about a public construction project.

What's new since 14 August 2026

Update from 14 August 2026: The Vienna branch of the FPÖ confirmed on Wednesday that it has lodged a Sachverhaltsdarstellung — a formal criminal complaint initiating a prosecutorial review — naming Michael Ludwig and Walter Ruck. The complaint is built around transcripts from the so-called Ruck files, a set of disclosed conversation records tied to the former head of the Vienna Economic Chamber.

At a press conference in Vienna, FPÖ officials argued that the transcripts raise specific questions about the handling of the AUVA rehabilitation centre project in the city's Meidling district. According to the party, the documents refer repeatedly to the mayor and his closest circle, suggesting to the FPÖ that the project was steered through administrative channels in a manner that warrants criminal scrutiny.

Speaking for the Vienna FPÖ, Prack demanded a complete public accounting from the mayor. "Angesichts dessen, dass der Bürgermeister und sein engstes Umfeld in den Ruck-Files mehrfach direkt genannt werden, ist er dringend dazu aufgerufen, alle Vorwürfe, insbesondere rund ums AUVA-Rehazentrum in Meidling, lückenlos aufzuklären," Prack said. The remark, delivered in German, underlines the FPÖ's central pressure point: that Ludwig himself, rather than only Ruck, must answer for the allegations.

What the FPÖ is alleging

The criminal complaint targets alleged abuse of office, an offence under Austrian law that covers the misuse of official powers by a public official. By naming Ruck alongside Ludwig, the FPÖ has widened the inquiry beyond the chamber's former leadership to the city administration that oversaw the project. Ruck, who previously led the Wirtschaftskammer Wien, is a frequent reference in the files released earlier this year.

Background on the project confirms that the City of Vienna required an architectural competition for the rehabilitation centre. The requirement set a formal, competitive procedure for awarding the design contract. According to the FPÖ, however, questions remain about how the competition was organised and which actors influenced the outcome, claims that the party says its complaint is intended to put before prosecutors rather than to litigate in the media.

Background: the AUVA rehabilitation centre in Meidling

In a separate strand, the FPÖ officials drew attention to the role of intermediaries. Brucker, identified in earlier reporting in connection with the files, has surfaced again in the transcripts examined by the FPÖ's legal team. The party said the names appearing in the documents go beyond two or three figures, which is why it asked prosecutors rather than pursuing the matter only through parliamentary channels.

City authorities have not yet issued a substantive response to the specific allegations contained in the Sachverhaltsdarstellung. A spokesperson for the SPÖ-led Vienna administration said only that the matter would be addressed through the appropriate legal process. Mayor Ludwig has so far limited his public comments to a brief statement that he will cooperate fully with any review.

Politically, the complaint lands in the middle of an already volatile summer in Vienna. The FPÖ has campaigned since the spring on allegations stemming from the Ruck files, and Wednesday's filing marks the first time the party has formalised those allegations in a criminal-law venue. For the SPÖ, the move shifts a controversy previously handled in the press into the judicial arena, a development that complicates the calculus for the mayor and his advisers.

Legal and political response

Legal experts quoted by the KURIER and other outlets have cautioned that a Sachverhaltsdarstellung does not automatically trigger a formal investigation. Prosecutors must first assess whether the facts described meet the threshold of an initial suspicion. The FPÖ acknowledged that assessment, saying the goal is to place the relevant documents on the record and to let the judiciary decide whether grounds exist to proceed.

For now, the next procedural step lies with the public prosecutor's office in Vienna, which will review the filing and decide whether to open a preliminary examination. The FPÖ indicated that it will publish any official response it receives, framing Wednesday's move as an effort to ensure transparency in a project financed with public funds.