Mexican authorities detained Diego Sebastián and Gerardo on September 3, 2026, for their probable involvement in the multiple homicide of Jonathan Melendez and his family in Atizapán de Zaragoza. ^[1] The victims, including Jonathan Melendez, his pregnant wife Ana Paola, their three-year-old daughter, and a 21-year-old domestic worker, were found dead in an apartment in Bosques Esmeralda on September 1, 2026. ^[2] A six-year-old child was the only survivor located with life after the multihomicide of Jonathan Meléndez, a keyboardist for the group Camilo Séptimo, and his family in Atizapán de Zaragoza, State of Mexico. ^[3] A video circulating on social media shows the moments prior to the murder of Jonathan Meléndez and three members of his family in a building in the Bosques Esmeralda neighborhood of Atizapán de Zaragoza, State of Mexico. ^[4] The Fiscalía General de Justicia del Estado de México (FGJEM) stated that the suspects likely exploited a relationship of trust to gain access to the residence. ^[5] Two men, identified as Diego Sebastián and Gerardo, have been detained and investigated as probable perpetrators of the multihomicide. ^[6] El Heraldo de México reported a possible conflict over 300,000 pesos between Melendez and Diego Sebastián regarding a house rental business on Airbnb. ^[7] One of the detained suspects was identified as Diego Sebastián, described as a partner of Jonathan Meléndez and a probable responsible party for the homicide. ^[8] Jonathan Melendez was a 38-year-old musician, keyboardist, composer, and producer who co-founded the indie rock and synthpop band Camilo Séptimo in 2013. ^[9] The homicide occurred on September 1, 2026, between 5:30 PM and 7:40 PM at the Grand Viure residential complex in the Bosque Esmeralda area of Atizapán de Zaragoza. ^[10] Two men identified as Diego Sebastián and Gerardo were detained by authorities on Wednesday, with investigations pointing to robbery as the motive for the crime. ^[11]