Argentine killed five people in Mexico with active judicial injunction
Diego Sebastián Rosen, under investigation for fraud, obtained an injunction 15 days before committing the quintuple homicide in the State of Mexico.
Argentine citizen detained in Mexico had fraud case and active injunction at time of crimes
Diego Sebastián Rosen, the Argentine citizen detained in Mexico accused of murdering five people in the State of Mexico on Tuesday, 1 September 2026, had an active arrest warrant in place for fraud at the time he committed the crimes. According to elargentinodiario.com.ar, merely 15 days before the massacre Rosen had obtained a judicial injunction that allowed him to remain at liberty despite the measure against him.
The State of Mexico's Attorney General's Office had maintained an arrest warrant against Rosen for some time in the context of an investigation into alleged irregularities linked to the rental of vacation properties. The imputed offence was fraud. The protective measure obtained by the accused blocked preventive detention and left him free until the night of the crime.
The five fatal victims were identified as Jonathan Meléndez Ochoa, keyboardist and music producer for the band Camilo Séptimo; his wife, aged 35 and pregnant; their daughter, aged 3; the family's domestic employee, aged 21; and the household pet. A child from the family survived by hiding inside a piece of furniture during the attack.
The judicial reconstruction established that Meléndez Ochoa was aware of the risk posed by an encounter with Rosen. In a prior conversation with a friend identified as Freddy, the musician warned: "If I don't answer tonight, report it to the authorities. You already know I've got some issues with Diego." That message became a key piece of evidence in the case file.
According to the investigators' account, Meléndez Ochoa entered his home and found Rosen there, with whom he had maintained conflicts for some time, principally related to money. The discussion escalated into violence: the alleged perpetrator gagged him and murdered him, then went on to attack the rest of the family members and the domestic employee present at the location.
The injunction that allowed Rosen to evade preventive detention whilst an active fraud case hung over him constitutes one of the most controversial aspects of the case. The sequence—an arrest warrant neutralised by a judicial protective measure, followed by a multiple murder weeks later—has reactivated in Mexico the debate over the scope and use of injunctions in criminal cases involving accused persons with active prior records.
Source: Google News AR — Crime