Austrian prosecutors said March 18 that new autopsy findings in the killing of influencer Stefanie Pieper leave open the possibility that she was still alive when she was put in a suitcase and buried in a Slovenian forest.
The development sharpened the central question in a cross-border homicide case that has gripped Austria since Pieper disappeared after returning home from a Christmas party on Nov. 23. Her ex-boyfriend, identified in public reports as Patrick M., remains in pretrial detention after police said he confessed and led investigators to the burial site. What remains unresolved is the final sequence of violence, transport and death, and that uncertainty is likely to shape the case if it goes to trial later this year.
Pieper, a 31-year-old fashion and lifestyle creator from Graz, was last known to have returned home early Nov. 23 after sharing a taxi with a friend, according to police summaries and follow-up reports. She was expected at a photoshoot later that day but never arrived, and a colleague reported her missing when calls went unanswered. On Nov. 24, Slovenian police found Patrick M. near his burning car in a casino parking lot close to the border after Austrian investigators said they believed he had driven into Slovenia several times. Police searched a wooded area south of Maribor on Nov. 25 without finding Pieper. Three days later, after extradition to Graz, authorities said Patrick M. “confessed to the crime and gave the police directions” to a burial site. Slovenian officers then found Pieper’s body inside a suitcase in a forest.
A new statement from the Graz Public Prosecutor’s Office added the case’s most disturbing uncertainty. Dr. Christian Kroschl, a spokesperson for the office, said the autopsy established that Pieper had been subjected to violence and strangled, but it could not fix the exact moment of death. Kroschl said it was “entirely possible” Pieper was alive when she was placed in the suitcase, while also saying she may already have been dead from strangulation. That leaves prosecutors with a narrower but harder question: whether the fatal act happened inside her apartment, during transport across the border or after she was hidden. Published accounts of the forensic findings have also described facial injuries that investigators believe could fit movement or resistance in the suitcase, though authorities have not laid out a full medical record in public court filings. For now, prosecutors appear to be stating only what the forensic evidence can clearly support and leaving the final timing open.
The case has drawn heavy attention in Austria because it began as a missing-person search before turning into a murder investigation that crossed into Slovenia. Police first disclosed only that a 31-year-old woman had failed to show up for work and that her ex-boyfriend had been detained. In the days that followed, Austrian media filled in details that made the disappearance feel immediate and local: Pieper had texted a friend after getting home, her phone was later found in bushes, and her dog was reportedly discovered alone in her apartment. Those details are not the backbone of the criminal case, but they help explain why the story spread so quickly across German-language media. Pieper was known online for fashion, beauty and lifestyle posts and had nearly 50,000 Instagram followers. Friends and relatives used social media to search for her before authorities announced that her body had been recovered.
Procedurally, the case is still moving toward trial, not verdict. Patrick M. remains in pretrial detention in Austria, and published reports say he could face life imprisonment if he is convicted. Two of his family members were also detained during the early phase of the investigation after police said they had indications the relatives might have had relevant information. Both were later released after the reported confession and the recovery of Pieper’s body, and public reporting reviewed this week does not indicate that they remain central to the case. What prosecutors have yet to spell out is how much of their case will rest on the reported confession, what digital or surveillance evidence may narrow the timeline inside Pieper’s apartment building, and whether transport evidence from the suspect’s car will carry significant weight. Those unanswered points matter because the forensic timeline, by prosecutors’ own account, remains unresolved.
The emotional force of the case has come from a series of small but vivid facts that emerged as the search widened. There was the missed photoshoot that first signaled something was wrong. There was the border-side casino parking lot where investigators found the suspect near a burning car. There was the shift from search efforts and public appeals to a forest recovery in another country. In the first days after Pieper vanished, Austrian reports described her mother making public appeals for help, and friends sharing her image widely online. Those moments gave the case a human scale beyond the legal file. They also made the latest prosecutorial statement carry extra weight. What had already appeared to be a brutal killing now also carries the possibility that Pieper’s final minutes are still partly hidden inside a gap that science has not yet closed. That gap is where the case now stands, between a confession, a burial site and a forensic question still waiting for a courtroom answer.
As of March 20, 2026, Austrian authorities had not publicly resolved when Pieper died relative to the burial. The next major milestone is the formal trial process expected later this year, when prosecutors will have to turn a shocking sequence of events into proof that can withstand scrutiny.
Author note: Last updated March 20, 2026.