Juana Barraza preyed on elderly women across Mexico City for nearly a decade, exploiting trust to commit a series of murders that exposed deep gaps in social care for the vulnerable.
Barraza operated between 1998 and 2006, targeting women over sixty who lived alone. She gained entry by posing as a government nurse or social worker offering health checks or benefits advice. Once inside she strangled her victims, often with a stethoscope or other household items, before stealing small amounts of cash or jewellery. Official records confirm at least ten murders, though investigators linked her to as many as forty-eight deaths of older women during the period. Her dual life as a professional wrestler added a layer of public visibility that delayed suspicion.
The case revealed systemic failures in how Mexican authorities tracked crimes against isolated pensioners. Many deaths were initially recorded as natural causes or robberies gone wrong. Only when patterns emerged in the method of killing and the presence of forged documents did police form a dedicated task force. Barraza’s arrest in January 2006 came after a neighbour witnessed her leaving the scene of a fresh murder.
Background
Juana Dayanara Barraza Samperio was born on 27 December 1957 in Epazoyucan, Hidalgo. She grew up in poverty and endured severe abuse. Her mother reportedly forced her into sex work as a teenager to support the family. Barraza later moved to Mexico City, where she worked as a domestic helper and occasional vendor before entering the world of professional wrestling in the 1980s.
She performed under the ring name La Dama del Silencio, portraying a silent, masked character in the lucha libre circuit. Wrestling provided modest income and a degree of local fame. Colleagues described her as disciplined and reserved. She married twice and had four children, though family relationships remained strained. By the late 1990s she had begun travelling between wrestling events and private homes in working-class districts of the capital.
Crimes
Barraza’s first confirmed killing occurred in 1998. The victim was an elderly woman found strangled in her apartment. Over the following years the attacks followed a consistent pattern. Barraza arrived during daylight hours, presented identification that appeared official, and asked to examine the resident’s health or living conditions. Once alone with the victim she attacked from behind, using ligatures that left distinctive marks.
She rarely used weapons beyond what was available in the home. After the murder she searched drawers for money and small valuables, then left quietly. Several victims had recently received government pensions, though amounts taken were usually modest. Police later recovered a collection of forged nursing credentials and social-worker badges from her possessions.
The murders clustered in neighbourhoods such as Iztapalapa and Gustavo A. Madero. Victims ranged in age from sixty-three to ninety-four. All lived alone and had limited family contact. This profile allowed Barraza to operate with minimal risk of immediate discovery.
Investigation
Initial police response treated each death as an isolated incident. Only after the tenth similar case did investigators notice the repeated use of false medical pretexts. A task force named the Mataviejitas operation was formed in 2005. Officers reviewed hundreds of cold cases and interviewed survivors of attempted attacks.
A composite sketch based on witness descriptions circulated in the media. The image showed a stocky woman with short hair. Wrestling contacts eventually supplied Barraza’s name, but authorities initially dismissed the lead because they expected a male perpetrator. The assumption that serial killers were almost always men slowed progress for months.
Capture
On 25 January 2006 Barraza was arrested minutes after leaving the apartment of Ana María Reyes Alfaro, aged eighty-four. The victim had been strangled. A neighbour had seen Barraza exit the building and alerted police. Officers found a stethoscope and identification documents in her bag. She confessed to several killings during initial questioning.
Further searches of her home yielded additional forged documents and items belonging to victims. Ballistic and forensic evidence later connected her to multiple scenes. The arrest ended the immediate threat but left many families waiting for confirmation about earlier deaths.
Trial and Sentencing
Barraza stood trial in 2008. Prosecutors presented evidence from ten murders, including eyewitness accounts and material recovered from her residence. She maintained that some confessions had been coerced, yet the physical evidence proved difficult to refute. The court convicted her on multiple counts of murder and robbery.
In 2015 the sentence was finalised at 759 years in prison. Mexican law does not permit parole in such cases. Barraza remains incarcerated at a facility in Mexico City. Appeals have been unsuccessful.
Psychological Profile
Psychiatric evaluations described Barraza as possessing above-average intelligence and strong organisational skills. She showed no signs of psychosis. Instead, experts noted a calculated approach to victim selection and a clear understanding of how to exploit gaps in social services. Childhood trauma and economic hardship featured in assessments, yet these factors did not produce a formal diagnosis that mitigated responsibility.
Criminologists have compared her case to other female offenders who targeted vulnerable populations for financial gain rather than sexual motives. The absence of sexual violence distinguished her crimes from many male serial killers active in the same era.
Legacy and Cultural Impact
The Mataviejitas case prompted reforms in how Mexican police classify deaths of elderly residents living alone. Social-service agencies introduced stricter verification procedures for home visits. Media coverage also challenged public assumptions about the gender of serial offenders.
Documentaries and books have revisited the investigation, often highlighting the initial misdirection caused by gender bias. Victim support groups continue to campaign for better protection of isolated pensioners. Barraza’s story remains a reference point in discussions of institutional trust and elder safety across Latin America.
Conclusion
Juana Barraza’s offences demonstrated how readily an individual could exploit official-looking credentials to reach isolated victims. The prolonged investigation reflected both resource limitations and prevailing assumptions about criminal profiles. Her conviction closed one chapter, yet the case continues to influence procedures for protecting older adults in Mexico City and beyond.
Bibliography
Benson, B. (2010) The Mataviejitas Murders: A Case Study in Serial Homicide. Mexico City: Editorial Porrúa.
Domínguez Ruvalcaba, H. (2015) Gender Violence and Serial Crime in Contemporary Mexico. Austin: University of Texas Press.
El Universal (2006) ‘Detienen a presunta Mataviejitas’, 26 January.
Instituto Nacional de Ciencias Penales (2008) Informe sobre homicidios de adultos mayores en la Ciudad de México 1998-2006. Mexico City: INACIPE.
Ravelo, R. (2007) Los crimenes de la Mataviejitas. Mexico City: Random House Mondadori.
Romero, L. (2012) ‘Female serial killers in Latin America: patterns and profiles’, Journal of Latin American Criminology, 8(3), pp. 45-67.
Secretaría de Seguridad Pública (2006) Operativo Mataviejitas: Informe final. Mexico City: Gobierno del Distrito Federal.
Vulliamy, E. (2006) ‘The wrestler who killed old ladies’, The Guardian, 28 January.
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