
The 1994 murder of Christel Ambrosius led to two wrongful convictions in the Netherlands. DNA later identified Ronald P., who was convicted of the killing.
Christel Ambrosius was killed in Putten in 1994. The investigation eventually focused on Herman du Bois and Wilco Viets, who were convicted despite major inconsistencies in the evidence and the absence of a direct forensic match.
The two men had made statements that became central to the prosecution, but later analysis showed how repeated and suggestive questioning had contributed to unreliable confessions. Their convictions were overturned, and they were formally acquitted in 2002 after years in prison.
The investigation was reopened, and new DNA work eventually identified Ronald P., who had been questioned during the original inquiry. He was convicted of the murder and received a lengthy prison sentence.
The Putten case became an important Dutch example of the dangers of confession-driven investigations. It is frequently studied in legal and psychological research because it demonstrates how investigators can become locked onto a theory even when biological evidence points elsewhere.