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Austrian Influencer Stefanie Pieper Missing After Christmas Party — Ex-Boyfriend Detained in Slovenia, Two Relatives Arrested

07:50 PM, 11/27/2025
Austrian Influencer Stefanie Pieper Missing After Christmas Party — Ex-Boyfriend Detained in Slovenia, Two Relatives Arrested

Missing influencer: Stefanie Pieper, 31, of Graz, Austria, has been missing since returning from a Christmas party on Nov. 23. Her dog was found alone in her apartment and her phone was switched off, prompting a missing-person report.

Developments: Slovenian police arrested Pieper’s 31‑year‑old ex-boyfriend after his car was found burning near the border; Austria has requested extradition. Two of his relatives were also detained and are being questioned.

Status: Searches in Slovenia have not found Pieper. Investigations are ongoing and officials caution that rumors of her being located are unconfirmed.

Stefanie Pieper, a 31-year-old makeup artist and beauty influencer from Graz, Austria, has been reported missing after returning home from a Christmas party on the morning of Sunday, Nov. 23. Family members raised the alarm when Pieper failed to show up for a scheduled photoshoot and could not be reached by phone.

Officers found Pieper’s dog alone in her apartment and discovered her phone had been switched off. According to authorities, Pieper reportedly messaged a friend by WhatsApp saying she had arrived home safely, later took her dog for a walk, and then sent another message indicating she believed someone was in the building’s stairwell. Neighbors told investigators they heard an argument and saw Pieper’s ex-boyfriend at the scene.

Police say the ex-boyfriend, also 31, was later located and arrested by Slovenian authorities after his car was found burning in a casino parking lot near the Austria–Slovenia border. Slovenian police detained the man at the scene and Austria has requested his extradition. Forensic examination of the burned vehicle reportedly produced no evidence that directly explains Pieper’s whereabouts.

In a subsequent update, Austrian investigators confirmed that two relatives of the arrested ex-boyfriend were also detained in Austria and remain in custody while being questioned. Authorities emphasized that the missing woman has not been located and that investigations and search operations are ongoing in both Austria and Slovenia.

Police warned the public not to rely on unconfirmed reports circulating online that Pieper has been found. Officials said they are continuing to coordinate cross-border inquiries and searches while pursuing all available leads.

What we know:

  • Pieper was last seen leaving a taxi with a friend after arriving home from a party on Nov. 23.
  • Her dog was alone in her apartment and her phone was off, prompting the missing-person report.
  • The ex-boyfriend’s burned car was discovered in Slovenia; he was detained nearby and extradition has been requested by Austria.
  • Two of the ex-boyfriend’s relatives have been arrested in Austria and are being questioned.
  • Searches in Slovenia have not yet located Pieper; the investigation remains active.

Authorities have not released further details while inquiries continue. Anyone with information is being urged to contact the Styrian State Criminal Police Office.

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