Overview
- Necochea: 15-year-old Bautista Coronel died after a stabbing during a filmed fight; a 17-year-old is detained under Juvenile UFI No. 4 as prosecutors analyze the bystander video and seized blades for possible secondary responsibility.
 - Mendoza: 13-year-old student Fausto Morcos García was killed and friend Julián Guzzo remains in intensive care with a reserved prognosis; UNCuyo declared three days of mourning as investigators review cameras and scene measurements involving an 82-year-old driver.
 - Son Castelló (Palma): after a head-on collision that killed a 27-year-old Argentine motorcyclist, all five car occupants presented to authorities and a judge ordered pretrial imprisonment for the driver on negligent homicide, failure to render aid, document falsification and vehicle misuse charges.
 - José C. Paz: driver Michael Jean Carballo registered 3.01 g of blood alcohol, was formally imputed for aggravated double culpable homicide and injuries, and three children from the struck family remain hospitalized after their parents died at the scene.
 - Across the weekend cases, police and courts moved quickly to secure detentions, collect surveillance and cellphone footage, and advance forensic work to establish accountability.