A nail technician has been arrested for stabbing her boyfriend to death after posting several chilling messages online.
Victoria Luz Cantero is accused of killing Matías Julián Álvarez Guardia, 29, with a single stab wound to the right side of his chest.
The 25-year-old allegedly plunged the knife into her boyfriend’s torso during a late-night row.
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Witnesses and family members claimed the young woman left him to die after the alleged attack.
The pair had been in an on-off relationship for around two years.
The alleged stabbing took place in Resistencia City in Chaco Province, Argentina, in the early hours of Sunday morning (2 Aug).
Matías was rushed to the Dr. Julio C. Perrando Hospital by a friend.
Surgeons operated but he tragically died from massive blood loss and cardiac arrest.
Victoria was detained nearby hours later and charged with homicide.
She denied stabbing him and claimed she arrived to find him already wounded on the pavement after receiving a phone call.
Her lawyer said the fatal incident followed a heated argument and that she has injuries to her arm and back.
The victim’s family painted a different picture.
Matías’ sister Noelia Guardia branded Victoria “very bad”, “toxic” and said she acted “without compassion”.
She claimed her brother had filed two gender violence complaints against the woman in 2024 and 2025.
Relatives said Victoria had previously smashed his car windscreen, scratched him and broken into his mother’s home at night, as reported by Need To Know.
Screenshots of Victoria’s now-deleted social media posts have shocked investigators.
One read: “I don’t understand those who carry a Labubu toy in their bag – I’d carry a Glock.”
Another declared: “I just want to love and mistreat the same man for the rest of my life.”
A third chilling message stated: “I will never ban my man from anything because he is free to choose where he wants me to stick the knife.”
Prosecutor Ana González de Pacce is leading the case.
Victoria, a manicurist who shares travel content online, remains in police custody as the investigation continues.
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