NEW : Suspect , Carlos Valles de la Rosa , 26 , also sought in connection with another murder . Federal prosecutor says Mexican authorities arrested suspect Friday . Federal spokesman Enrique Torres said the suspect was arrested sometime Friday . Suspect called member of Aztecas street gang , which is affiliated with Juarez drug cartel .
NEW : Suspect , Carlos Valles de la Rosa , 26 , also sought in connection with another murder . Federal prosecutor says Mexican authorities arrested suspect Friday . Suspect called member of Aztecas street gang , which is affiliated with Juarez drug cartel .