← Back to Brazil casesDais Diana Souza e Silva and Davi Silva Samaritano Allegedly Murdered by Diógenes dos Santos Samaritano, Parauapebas, Pará, Brazil
Case Summary
On March 31, 2019, Dais Diana Souza e Silva was found dead at her residence in Parauapebas, Pará, Brazil. Her husband, Diógenes dos Santos Samaritano, a traffic agent, was accused and convicted of femicide. The relationship was marked by prolonged physical, psychological, and financial abuse, with multiple police reports filed by the victim. The victim's 4-year-old son, Davi, witnessed the violence and death. The crime scene and forensic evidence contradicted the defense's suicide claim. The defendant confessed partially, citing intoxication and memory loss. The jury convicted him with a 20-year sentence, reduced to 15 years for confession, with loss of public office and no right to appeal in freedom.
Basic Information
Country: Brazil
State/Province: Pará, Brazil
City/Region: Parauapebas
Incident Type: Domestic Violence Homicide
Relationship Status: Married
Relationship Duration: Approximately 6 years
Incident Date: March 31, 2019
Incident Sequence and Additional Victims
Primary reported outcome: Homicide
Reported self-harm outcome: No suicide or attempt reported
Reported sequence: Order not reported / unclear
Additional victims reported: 0
Relationship Journey
Relationship Origins:
- Met at Workplace
- Arranged marriage
Relationship Stages:
- Married Living Together
- Separated
Analysis
Contributing Factors:
- Financial Issues
- Domestic Violence Allegation
- Family pressure
Red Flags:
- Escalation Pattern / Violence
- Secret affair
- Manipulative behavior
- Hiding Chat
- Missing Victim
- Missing Suspect
- Threats
- Social Isolation / Withdrawal
Motives:
- Eliminate spouse
- Avoid divorce settlement
- Jealousy
- Control/domination
- Fear of exposure
Relationship Outcomes:
- Divorce filed
- Legal case ongoing
- Homicide during marriage
- Arrest made
- Protective order issued
People Link Graph
Relationship Journey Graph
Origin
- Met at Workplace
- Arranged marriage
How the relationship or connection began.
Status
- Married
Approximately 6 years
Stages
- Married Living Together
- Separated
Important relationship phases recorded for this case.
Warning Signals
- Escalation Pattern / Violence
- Secret affair
- Manipulative behavior
- Hiding Chat
- Missing Victim
- Missing Suspect
- Threats
- Social Isolation / Withdrawal
Reported red flags or early concern points.
Pressure Points
- Financial Issues
- Domestic Violence Allegation
- Family pressure
- Eliminate spouse
- Avoid divorce settlement
- Jealousy
- Control/domination
- Fear of exposure
Contributing factors and possible motives from the available sources.
Incident
2019-03-31
Outcome
- Divorce filed
- Legal case ongoing
- Homicide during marriage
- Arrest made
- Protective order issued
Recorded relationship or case outcome.
Sources
English labels are shown first. Original-language titles are preserved for source verification.
Dais Diana Souza e Silva and Davi Silva Samaritano Allegedly Murdered by Diógenes dos Santos Samaritano, Parauapebas, Pará, Brazil
Relato de Casos Criminais · Original language: Portuguese
View original title
Julgamento Completo de Diógenes dos Santos Samaritano
AI Intelligence Assessment
Relationship Pattern
Domestic Violence
Pattern Analysis
The case exhibits a pattern of prolonged domestic violence including physical, psychological, and financial abuse. The victim was isolated from family and subjected to escalating violence culminating in femicide. The perpetrator used control and intimidation, including parental alienation and threats, consistent with coercive control dynamics.
Investigative Notes
The investigation included forensic analysis disproving suicide, multiple witness testimonies confirming abuse, and the defendant's partial confession. The defendant was arrested in flagrante delicto after being located at his lawyer's office. Evidence included blood stains, hidden knives, and removal of DVR from the crime scene. The child witness's statements were collected via specialized listening. The case was moved to Belém due to concerns about impartiality in Parauapebas.
Investigation Confusion
Initial police reports suggested suicide, but forensic evidence and investigation disproved this. There was some dispute about the timing and legality of the flagrante arrest. The defendant's partial memory loss and intoxication complicated the narrative.
Case Reconstruction / Puzzle Pieces
The victim suffered ongoing abuse from early in the marriage. On the day of the incident, after a day at the mall, a violent altercation occurred at the home. The victim was assaulted and thrown from a second-floor window. The defendant fled the scene but was arrested later the same day. The child was left in care of a nanny and witnessed parts of the violence. Forensic evidence and witness statements corroborated the abuse and homicide.
Risk Assessment
High risk due to history of escalating violence, prior convictions for domestic violence, and use of physical and psychological abuse. The presence of a child witness adds to the trauma and risk factors.
Key Takeaways
Early signs of domestic violence included physical injuries, psychological abuse, and isolation from family. The escalation pattern led to femicide. The importance of forensic investigation in disproving suicide claims is highlighted. Child witnesses require specialized care. Legal protections and intervention are critical to prevent fatal outcomes.
AI Case Q&A
What early signals mattered most?
Repeated physical abuse, psychological control, isolation from family, prior police reports, and victim's attempts to separate.
Which clues helped connect the case?
Forensic evidence of blunt force trauma, blood stains inconsistent with suicide, hidden weapons, child witness statements, victim's injuries and behavior.
Which evidence types appeared strongest?
Forensic crime scene analysis, medical necropsy report, specialized child interviews, witness testimonies, photographs of injuries, defendant's partial confession.
Witness / Eyewitness Statements
Witnesses included family members, child caregivers, psychologists, police investigators, and friends. They reported ongoing abuse, victim's injuries, defendant's aggressive behavior, and child witness accounts. Some witnesses feared retaliation from the defendant.
How did follow-up reports change the understanding?
No follow-up reports available beyond trial and sentencing.
What remained unclear?
Exact details of the fatal blow and sequence of events remain partially unclear due to defendant's memory gaps and intoxication.