The Seewen Murders

The victims and the Waldeggli house

On the Pentecost weekend of 1976, five members of one extended family were shot dead at Waldeggli, a small weekend cottage on the edge of a wood near Seewen in the Swiss canton of Solothurn. The Solothurn public prosecutor's office dates the killings to 5 and 6 June 1976. The dead were the married couple Eugen Siegrist, 63, and Elsa Siegrist, Eugen's 80-year-old widowed sister Anna Westhäuser-Siegrist, and her two adult sons, Emanuel, 52, and Max, 49. Reports differ slightly on Elsa Siegrist's age: Swiss public broadcaster SRF gives 62, while other published accounts give 63.

The cottage was a retreat the family used for quiet weekends in the countryside. Accounts of who first found the victims vary, and the official statements we reviewed do not settle the point. What is not in dispute is the scale of the crime: SRF and other Swiss media still describe the Seewen case as the largest unsolved crime in the country's criminal history.

What happened at Waldeggli

Investigators concluded that a single rifle, a copy of a Winchester-style weapon with a shortened barrel, had been used and that thirteen shots were fired. Four of the dead were later found inside the cottage and the fifth on the terrace. There was no clear sign of an ordinary robbery, and the authorities were never able to establish why the family had been targeted.

One theory reported over the years is that the attacker expected to find only the Siegrist couple at the cottage, and that the other relatives were killed because they happened to be there. This has never been more than a hypothesis. The prosecutor's office has stated plainly that the motive and the perpetrator remain unknown.

A decades-long investigation

The Solothurn police launched one of the most extensive inquiries Switzerland had seen at the time. According to SRF, officers followed up more than 9,000 tips and worked systematically through owners of the type of rifle believed to have been used. For many years those efforts produced no breakthrough.

That changed by chance in the autumn of 1996, twenty years after the killings. A tradesman renovating a flat in Olten found the murder weapon hidden in a plastic bag behind the kitchen units. The rifle belonged to a man who had previously lived in Basel; the flat belonged to his mother. He had been questioned in 1976 and had told police he had sold the gun at a flea market, after which that line of inquiry was closed. He left Switzerland in 1977 and has been considered missing ever since. He was never charged with any offence, no court has ever examined the evidence against him, and he is legally presumed innocent.

Time limits and the 2013 tips

Under Swiss criminal law, murder becomes time-barred after thirty years, and SRF reports that this limit applied to Seewen. The killings therefore passed beyond the reach of prosecution in 2006. At least one English-language account gives a different, earlier date for when the case expired, but the thirty-year period cited by Swiss reporting points to 2006.

Public interest has never faded. In January 2013 the Solothurn police received fresh information, including a written statement from a man who believed he could help. Although no one could be punished any more, the public prosecutor's office decided that the seriousness of the crime justified following the leads as far as the law allowed. In a media release on 27 November 2013 it announced that none of the information had produced a new line of investigation. A book on the case by Robert Siegrist appeared in 2001, and documentaries and podcasts have revisited it since, but no official finding has ever named a killer.

Current status

The Seewen murders remain officially unsolved. No one has been convicted, and no court has ever ruled on who fired the shots. Anyone mentioned in public speculation over the decades is legally innocent, and the Solothurn authorities have not attributed the crime to any individual. We found no new official investigative development concerning the case itself between 2024 and 2026.

Why the case still matters in Switzerland

Seewen is often cited in Swiss discussions of cold cases because the murder weapon surfaced only after twenty years and the crime expired legally a decade later, leaving relatives with no prospect of a trial. That kind of outcome has fed a long debate about whether the gravest crimes should ever become time-barred.

That debate has now reached the federal parliament. Following a 2019 cantonal initiative from St. Gallen, the Council of States in March 2025 approved a bill to end the statute of limitations for murder, and on 16 September 2026 it confirmed that position by 25 votes to 18, according to the Swiss parliament's news service. Both chambers still had to hold final votes before the change could become law. Even if it is adopted, it would not reopen Seewen: the St. Gallen initiative proposed covering only murders committed after 1 January 1995, and the 1976 killings had long since expired.