Roberto Alejandro Balmori Garza was last seen over Sunday , official says . Reports say his two brothers were found shot dead in neighboring Roberto Alejandro Balmori Garza state the weekend . Nuevo Leon has been the scene of violent attacks in Mexico 's drug war .
Roberto Alejandro Balmori Garza was last seen over the weekend , official says . Reports say his 2 brothers were found shot dead in neighboring Nuevo Leon state Sunday . Nuevo Laredo has been the scene of violent attacks in Mexico 's drug war .