The report in El Mundo newspapers comes a week after Le Monde reported similar allegations of U.S. spying in France, and German magazine Der Spiegel reported that a document shows that Washington tapped Chancellor Angela Merkel's mobile phone.
El Mundo said that a document provided by the former NSA contractor Edward Snowden shows that the NSA monitored the phone calls from Dec. 10, 2012, until Jan. 8, 2013, but not their content.
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