Diego Sebastián Rosen, a 51-year-old Argentine man, was detained in Mexico City on Wednesday for the murder of musician Jonathan Meléndez and his family. ^[1] Jonathan Meléndez was the leader of the Mexican band Camilo Séptimo and was killed along with his family in a crime that occurred in Mexico. ^[2] Diego Sebastián Rosen was detained for his alleged participation in the multihomicide of Jonathan 'Honas' Meléndez and his family in Atizapán de Zaragoza. ^[3] Mexican authorities identified Diego Sebastián Rosen as the presumed material and intellectual author of the assassination. ^[4] Security cameras at the artist's residence captured Rosen entering the property, and he is alleged to have used a socio-commercial relationship with Meléndez to gain access. ^[5] Diego Sebastián Rosen was identified by authorities as a business partner of the victim and a primary suspect in the homicide. ^[6]