(Madrid) -- The U.S. ambassador to Spain is addressing the NSA spying scandal. After being summoned by the Spanish government on Monday, ambassador James Costos addressed allegations that the NSA had recently collected data on 60-million telephone calls in Spain. Costos met with Spanish officials for less than an hour. A Spanish official says "a necessary balance" between security and privacy concerns must be maintained. He added that Spain wants the U.S. to clarify "the reach of measures that, if proven to be true, are improper and unacceptable between partners and friendly countries." The new allegations adds to a spying scandal that includes, Brazil, Germany, France and Mexico.