Justice authorities in Santa Fe have detained the mother of a 16-year-old girl charged with the homicide of Jeremías Monzón, a 15-year-old boy killed in December. The woman is seen as a possible necessary participant in the crime, which was recorded on video and whose leak sparked protests. Prosecutor Francisco Cecchini is probing phone threats to clarify her involvement.
The murder of Jeremías Monzón has shaken the province of Santa Fe. The 15-year-old boy from Santo Tomé disappeared on December 18, 2025. He traveled to Santa Fe for his first in-person meeting with a 16-year-old girl, the main suspect. Four days later, on December 22, neighbors reported a body in a shed on the southern access to the city, near the road bridge linking Santa Fe to Santo Tomé, opposite the Colón club stadium.
The autopsy showed 20 to 23 stab wounds, with death occurring on December 18. The teenager was arrested on December 23 at the “Casa de Juan Diego” assisted living home in Santa Fe, alongside her mother. Two 14-year-olds were also charged but returned to their families under the oversight of the Child Welfare Secretariat.
Recently, prosecutor Francisco Cecchini ordered the mother's detention, based on new evidentiary elements implicating her as a necessary participant. The origin of phone threats is under investigation to confirm this theory. The minor has been held in a closed youth center in Rosario since December.
The case drew public scrutiny due to a leaked video showing crime details, prompting a rally on Friday outside the Colón stadium. Family members and organizations demanded justice, better victim protection, and strict protocols to prevent exposure of sensitive evidence. Monzón's family stressed limiting the video's use solely to the judicial process.
