Nuevo Laredo has been the scene of violent attacks in Mexico 's drug war . Roberto Alejandro Balmori Garza was last seen over the weekend , official says . Comment: Nuevo Laredo has been the scene of violent attacks in Mexico 's drug war .
Roberto Alejandro Balmori Garza was last seen over the weekend , official says . Comment: Nuevo Laredo has been the scene of violent attacks in Mexico 's drug war .