Mexican justice took a key step in solving the brutal murder that shook the independent music world. Diego Sebastián Rosen Ferlini, a 51-year-old Argentine businessman, was arrested on September 2, 2026 as the alleged perpetrator of the homicide of musician Jonathan Meléndez, keyboardist and founder of the band Camilo Séptimo, along with his pregnant wife, his 3-year-old daughter, and a domestic worker.
Meléndez, 38, was a prominent figure in the Latin American indie scene. His band, formed in 2013, has four albums and over 1.4 million monthly listeners on Spotify. The crime has sent shockwaves through the music community in Mexico and beyond, raising questions about the safety of public figures and the dangers of business disputes.
How the capture happened
Rosen was intercepted on the México-Toluca highway, in the area known as La Marquesa, in the municipality of Ocoyoacac. The operation, carried out less than 24 hours after the discovery of the bodies, was coordinated by the State of Mexico Attorney General's Office (FGJEM), along with the Secretariat of Security and Citizen Protection (SSPC) and the Mexico City Secretariat of Citizen Security.
In the same procedure, Gerardo Cisneros Bejarano was also arrested, identified as an accomplice. Both remain at the disposal of the authorities, who continue investigating to determine the exact motive for the crime.
The horror in the Grand Viure subdivision
The events occurred on September 1, 2026, between 5:30 PM and 7:40 PM, in an apartment in the Grand Viure subdivision, in the Zona Esmeralda area of Atizapán de Zaragoza. The victims were found at 11:50 PM that same day, tied up with duct tape.
The toll was devastating: Jonathan Samuel Meléndez Ochoa, 38; his wife Ana Paula, 35, four months pregnant; the couple's daughter, Sofía, just 3 years old; and Aleyda Romero, 21, who worked as a housekeeper. The family dog was also killed, tied in the same way as the humans.
Authorities reported that the victims had gunshot wounds to the head. The girl's wound was made at close range, while Aleyda was shot in the back. A couple's son, 6 years old, was found alive and unharmed, a fact that brings a glimmer of hope amid the tragedy.
The trust-based relationship that ended in massacre
The key to solving the case lies in the business relationship between Rosen and Meléndez. Both were partners in a vacation rental business, which would have allowed the suspect to enter the home without forcing entry. No signs of violence were found at the entrance, reinforcing the hypothesis that the victims knew their attackers.
In Mexico, vacation rentals have grown in popularity, but also in disputes over properties and earnings. This case highlights the risks that can arise when personal ties and financial interests mix.
Economic motive: the dispute over 300 thousand pesos
According to investigation sources, the possible motive would be an economic dispute over 300,000 Mexican pesos (approximately 15,000 US dollars). Rosen allegedly planned the crime to eliminate his partner and keep the assets or avoid paying the debt.
The investigation also revealed that the Argentine owned a travel company called NOMAD Adventures, operating under the names “+ Relax” and “NOMAD P.M.” This company had been reported on social media for alleged scams in vacation rentals in destinations such as Valle de Bravo, Acapulco, and Tepoztlán, with amounts exceeding 400,000 or 500,000 Mexican pesos.
Repercussion in the music scene
The news fell like a sledgehammer in the independent music industry. Camilo Séptimo published an obituary on their social media saying goodbye to the victims and demanding justice.
The case has sparked a strong debate in Mexico about security in upscale residential areas and the vulnerability of public figures facing commercial conflicts. Authorities have assured that the case will be thoroughly investigated to leave no doubt about the responsibility of those arrested.
Meanwhile, the couple's 6-year-old son, who miraculously survived, has been placed in the care of relatives, amid a shock that has yet to find comfort.
Original source: El Litoral