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3 clusters · 15 sources · 10 days · First seen · Last updated
German cold case investigations
Overview
German authorities are revisiting long-term missing persons cases through renewed investigations and media appeals.
In Kempen, police are seeking leads regarding the 1988 disappearance of 22-year-old student Dagmar Knops. Knops was last seen leaving the Lichtblick restaurant alone on March 28, 1988, and never arrived at her nearby home. Investigators are treating the case as a homicide. Following a broadcast of the television program ‘Aktenzeichen XY... Ungelöst’ on November 4, 2026, a witness came forward with information regarding another violent crime against a woman that occurred around the same time. Fabian Puchet of the Bavarian State Criminal Police Office noted that this could suggest the perpetrator committed previous offenses against women.
Mönchengladbach police are currently investigating two primary scenarios: that Knops was attacked by unknown individuals on her walk home, or that an encounter with someone she knew escalated into a crime. Authorities are specifically looking for witnesses who may have been sitting on a park bench near the restaurant that night, as well as information regarding two anonymous letters sent in 2005 and 2008. Missing items include a copper bracelet, a silver chain, and a wallet.
In Ludwigshafen, authorities are also seeking information concerning the 1985 disappearance of six-year-old Sven Hollstein. Hollstein vanished from his apartment building in the Pfingstweide district. While a previous legal proceeding involving a suspect ended in an acquittal, the case remains unsolved. It is currently unclear if the child was a victim of a crime or an accident.
Entities
Kempen · Dagmar Knops · Ludwigshafen · Bavarian State Criminal Police Office · Sven Hollstein
Timeline
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[CRIME] 5 sourcesGerman police seek new leads in 1988 disappearance of Dagmar Knops
German authorities are pursuing new leads in the 38-year-old cold case of Dagmar Knops, who disappeared in Kempen in 1988. A new witness has reported a related violent crime.
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[CRIME] 12 sourcesZDF Aktenzeichen XY presents unsolved criminal cases
The ZDF crime program Aktenzeichen XY is revisiting several cold cases, including the 1985 disappearance of Sven Hollstein and a violent robbery in Dortmund, seeking new public leads.
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[CRIME] 2 sourcesPolice seek new leads in 1988 disappearance of Dagmar Knops
Police in Kempen, Germany, are seeking witnesses and information regarding the 1988 disappearance of student Dagmar Knops, offering a 5,000 euro reward for leads.
Sources
bbv-net.de · bild.de · derwesten.de · halternerzeitung.de · heute.de · lokalo.de · marler-zeitung.de · recklinghaeuser-zeitung.de · ruhrnachrichten.de · saarbruecker-zeitung.de · swr.de · t-online.de · waltroper-zeitung.de · wochentlich.de · ww-kurier.de
This summary has been updated 2 times: see revision history