← Back to Germany casesKonstanze K. Allegedly Murdered by Patrick, Neuss, North Rhine-Westphalia, Germany
Case Summary
Konstanze K., a woman from Neuss, Germany, was murdered by her ex-boyfriend Patrick after a history of a toxic relationship, stalking, and violence. After breaking up in October 2018, Patrick repeatedly violated restraining orders and stalked Konstanze. On April 26, 2019, he confronted her armed with a revolver, shot her multiple times, and then attempted suicide by jumping in front of a train, resulting in severe injuries. Konstanze died in hospital. Patrick was later sentenced to life imprisonment for murder and violation of the protection against violence law.
Basic Information
Country: Germany
State/Province: None
City/Region: Neuss
Incident Type: Domestic Violence Homicide
Relationship Status: Ex-partners
Relationship Duration: Approximately 1 year (dating and cohabitation)
Incident Date: April 26, 2019
Incident Sequence and Additional Victims
Primary reported outcome: Homicide
Reported self-harm outcome: Attempted suicide; medical outcome reported
Person(s) reported to have died by or attempted suicide: Patrick
Reported role: Alleged suspect / offender
Reported sequence: Homicide or serious injury, then suicide or attempt
Relationship Journey
Relationship Origins:
- Dating app
Relationship Stages:
- Dating
- Living Together without Marriage
- Separated
Analysis
Contributing Factors:
- Domestic Violence Allegation
- Domestic Conflict
- Divorce / Separation
Red Flags:
- Escalation Pattern / Violence
- Manipulative behavior
- Threats
- Stalking / Repeated Harassment
- Firearm Access / Concerning Weapon Behavior
- Divorce Pending / Recent Separation
- High-Conflict Household
Motives:
- Revenge
- Jealousy
- Eliminate romantic partner
Relationship Outcomes:
- Legal case ongoing
- Homicide during marriage
- Suicide/self-harm
- Arrest made
- Protective order issued
- Weapon recovery
- Investigation still ongoing
People Link Graph
Relationship Journey Graph
Origin
- Dating app
How the relationship or connection began.
Status
- Ex-partners
Approximately 1 year (dating and cohabitation)
Stages
- Dating
- Living Together without Marriage
- Separated
Important relationship phases recorded for this case.
Warning Signals
- Escalation Pattern / Violence
- Manipulative behavior
- Threats
- Stalking / Repeated Harassment
- Firearm Access / Concerning Weapon Behavior
- Divorce Pending / Recent Separation
- High-Conflict Household
Reported red flags or early concern points.
Pressure Points
- Domestic Violence Allegation
- Domestic Conflict
- Divorce / Separation
- Revenge
- Jealousy
- Eliminate romantic partner
Contributing factors and possible motives from the available sources.
Incident
2019-04-26
Outcome
- Legal case ongoing
- Homicide during marriage
- Suicide/self-harm
- Arrest made
- Protective order issued
- Weapon recovery
- Investigation still ongoing
Recorded relationship or case outcome.
Sources
English labels are shown first. Original-language titles are preserved for source verification.
Konstanze K. Allegedly Murdered by Patrick, Neuss, North Rhine-Westphalia, Germany
Lucia Leona · Original language: English
View original title
Getrennt, gestalked, ermordet. | Der Fall Constanze K.
AI Intelligence Assessment
Relationship Pattern
Domestic Violence
Pattern Analysis
The case follows a pattern of domestic violence involving a toxic relationship with controlling and stalking behavior by the ex-partner after separation. Despite restraining orders and legal interventions, the offender escalated to lethal violence, demonstrating a pattern of coercive control and revenge.
Investigative Notes
Police investigations revealed multiple restraining orders against Patrick, including for stalking and attacks. Patrick was convicted in 2017 for prior offenses. After the fatal shooting, Patrick attempted suicide and was later sentenced to life imprisonment. The case raised questions about police risk assessment and preventive measures.
Investigation Confusion
Patrick denied guilt during trial, claiming unknown third parties were responsible. Police initially did not consider prior convictions in risk assessment. There was no confusion about suspect identity but some dispute over the adequacy of protective measures.
Case Reconstruction / Puzzle Pieces
Konstanze and Patrick met via Tinder in June 2017 and lived together for about six months. The relationship became toxic with controlling and violent behavior by Patrick. Konstanze broke up in October 2018. Patrick stalked and harassed her repeatedly, violating restraining orders. On April 26, 2019, Patrick confronted Konstanze with a revolver, shot her multiple times, and then attempted suicide by train. Konstanze died in hospital; Patrick survived with severe injuries and was later sentenced.
Risk Assessment
High risk was retrospectively assessed using a risk assessment form, but police did not implement preventive measures such as electronic monitoring despite multiple restraining order violations.
Key Takeaways
Early signs of controlling and stalking behavior after separation are critical warning signals. Legal protective measures may be insufficient without enforcement tools like electronic monitoring. Emotional manipulation and stalking can escalate to lethal violence. Support systems and awareness are vital for victim protection.
AI Case Q&A
What early signals mattered most?
Repeated stalking, violation of restraining orders, emotional manipulation, and threats after breakup were key early signals.
Which clues helped connect the case?
Messages from Patrick, witness accounts of stalking and attacks, police records of restraining orders, and physical evidence from the shooting connected the case.
Which evidence types appeared strongest?
Police investigations, witness statements, restraining orders, and forensic evidence from the shooting were strongest.
Witness / Eyewitness Statements
Neighbors and colleagues reported seeing Patrick stalking Konstanze and intervening during attacks. Konstanze’s mother described her injuries after a knife attack. Police officers found Patrick on train tracks after suicide attempt.
How did follow-up reports change the understanding?
Follow-up reports clarified the extent of Patrick’s prior convictions and restraining order violations, and highlighted police risk assessment failures.
What remained unclear?
Unclear why police did not apply stricter preventive measures despite high risk; Patrick’s claims of third-party involvement were rejected.