← Back to Brazil casesDaiane Reis Mota, Ruben, and others Allegedly Murdered by Adilson Prado Lima Júnior, Serrinha, Bahia, Brazil
Case Summary
On December 17, 2017, Daiane Reis Mota, 25, nine months pregnant, was found murdered in a rural area of Serrinha, Bahia. Her partner, Adilson Prado Lima Júnior, 25, confessed to killing her driven by jealousy after allegedly seeing WhatsApp messages. The couple had been together for about 1 year and 9 months and lived together. Adilson was arrested, charged with femicide and qualified homicide, and sentenced to 43 years and 10 months in prison. The crime was premeditated, involving control, jealousy, and domestic violence. The victim left behind a son from a previous relationship. The family fought for justice and custody of the child.
Basic Information
Country: Brazil
State/Province: Bahia, Brazil
City/Region: Serrinha
Incident Type: Domestic Violence Homicide
Relationship Status: Live-in relationship
Relationship Duration: 1 year and 9 months
Incident Date: Dec. 16, 2017
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: 1
Additional victim events:
- Unborn baby Maria Clara — Family or household member; Killed; Same episode; order unclear
Relationship Journey
Relationship Origins:
- Family introduction
Relationship Stages:
- Dating
- Living Together without Marriage
Analysis
Contributing Factors:
- Domestic Violence Allegation
- Family pressure
Red Flags:
- Secretive communication patterns
- Escalation Pattern / Violence
- Manipulative behavior
- Threats
- Divorce Pending / Recent Separation
Motives:
- Jealousy
- Control/domination
- Eliminate romantic partner
Relationship Outcomes:
- Divorce filed
- Legal case ongoing
- Homicide during marriage
- Arrest made
- Deadbody recovery
People Link Graph
Relationship Journey Graph
Origin
- Family introduction
How the relationship or connection began.
Status
- Live-in relationship
1 year and 9 months
Stages
- Dating
- Living Together without Marriage
Important relationship phases recorded for this case.
Warning Signals
- Secretive communication patterns
- Escalation Pattern / Violence
- Manipulative behavior
- Threats
- Divorce Pending / Recent Separation
Reported red flags or early concern points.
Pressure Points
- Domestic Violence Allegation
- Family pressure
- Jealousy
- Control/domination
- Eliminate romantic partner
Contributing factors and possible motives from the available sources.
Incident
2017-12-16
Outcome
- Divorce filed
- Legal case ongoing
- Homicide during marriage
- Arrest made
- Deadbody recovery
Recorded relationship or case outcome.
Sources
English labels are shown first. Original-language titles are preserved for source verification.
Daiane Reis Mota, Ruben, and others Allegedly Murdered by Adilson Prado Lima Júnior, Serrinha, Bahia, Brazil
Relato de Casos Criminais · Original language: Portuguese
View original title
Caso Daiane Mota: O sonho do parto virou luto
AI Intelligence Assessment
Relationship Pattern
Jealousy
Pattern Analysis
The crime was driven by pathological jealousy and possessiveness by the partner, Adilson, who killed Daiane while she was pregnant. The relationship involved control and escalating domestic violence, culminating in a premeditated homicide. The suspect attempted to conceal evidence and mislead investigators, reflecting a pattern of betrayal and dissimulation.
Investigative Notes
Police investigation included forensic analysis of vehicle and weapon, security camera footage, and witness testimonies. Adilson confessed and was arrested in flagrante delicto. DNA confirmed paternity of unborn child. The weapon was recovered from suspect's father's store. The case proceeded to trial with multiple witnesses and resulted in a conviction with a lengthy prison sentence.
Investigation Confusion
Initial suspect narrative included false claims about victim's whereabouts and involvement of ex-husband. Conflicting statements about weapon location delayed recovery. Some family members initially believed in alternative theories. The suspect's contradictory accounts increased investigative complexity.
Case Reconstruction / Puzzle Pieces
Daiane left home on December 16, 2017, with Adilson to buy baby items. Security footage showed Adilson driving her to a rural area where he shot her in the head. He returned alone, hid evidence, and feigned concern by participating in searches and filing a missing person report. The body was found December 17. Evidence and confession led to arrest and trial. The motive was jealousy over alleged WhatsApp messages, though family disputed this claim.
Risk Assessment
High risk due to escalating jealousy, possessiveness, prior domestic conflicts, and premeditation. The suspect's behavior showed manipulation and attempts to evade detection, indicating dangerous control dynamics.
Key Takeaways
Jealousy and possessiveness can escalate to lethal violence even in seemingly calm relationships. Premeditation and dissimulation are common in domestic homicides. Early signs include controlling behavior, secretive communication, and sudden changes in routine. Family involvement and forensic evidence are critical in solving such cases.
AI Case Q&A
What early signals mattered most?
Adilson's jealousy, possessiveness, and prior arguments with Daiane were early signals. His nervousness and inconsistent statements on the day of disappearance also raised suspicion.
Which clues helped connect the case?
Security camera footage of vehicle movements, disappearance of victim's phone, and Adilson's behavior during searches were key clues.
Which evidence types appeared strongest?
Forensic analysis of weapon and vehicle, DNA testing, security camera footage, and suspect's confession were strongest evidence types.
Witness / Eyewitness Statements
Family members, including Daiane's father and brother, and close friends reported Adilson's jealous and possessive behavior. Witnesses noted his nervousness and aggressive reactions during the investigation. Friends confirmed no romantic involvement between Daiane and her colleague, contradicting suspect's jealousy motive.
How did follow-up reports change the understanding?
Follow-up reports confirmed DNA paternity, recovered weapon, and led to trial and conviction. Initial alternative theories about ex-husband involvement were disproven.
What remained unclear?
Exact content of alleged WhatsApp messages remains unverified. Full extent of prior domestic violence is unclear.