Spain summoned the US ambassador yesterday to discuss allegations of spying on Spanish citizens that it said could break the climate of trust between the two countries if proved true.

Earlier, the Spanish newspaper El Mundo said the NSA had recently tracked over 60 million calls in Spain in the space of a month, citing a document which it said formed part of papers obtained from ex-NSA contractor Edward Snowden.

“I had been in touch with (the US ambassador) before this morning’s meeting... So far, we have no official indication that our country has been spied on,” Spanish Foreign Minister José Manuel Garcia-Margallo said at a joint news conference with his Polish counterpart in Warsaw. “As in previous occasions, we’ve asked the US ambassador to give the government all the necessary information on an issue which, if it was to be confirmed, could break the climate of trust that has traditionally been the one between our two countries.”

Madrid has also asked the US to provide more data from the National Security Agency (NSA), the foreign ministry said in a statement issued after a meeting between Spain’s Secretary of State for the EU, Inigo Mendez de Vigo, and US Ambassador to Spain James Costos.

US President Barack Obama has ordered a review of US surveillance programmes after Snowden leaked documents that raised alarm in the US and abroad.

“We will continue to confer with our allies, such as Spain, through our regular diplomatic channels to address the concerns that they have raised,” Costos said in a statement.

Spain has so far resisted calls from Germany for the EU’s 28-member states to reach a “no-spy deal”, after reports that the NSA monitored the phone of German chancellor Angela Merkel.

El Mundo yesterday reproduced a graphic which it said was an NSA document showing the agency had spied on 60.5 million phone calls in Spain between December 10, 2012 and January 8 this year.

The newspaper said it had reached a deal with Glenn Greenwald, the Brazil-based journalist who has worked with other media on information provided to him by Snowden, to get access to documents affecting Spain.

El Mundo said the telephone monitoring did not appear to track the content of calls but their duration and where they took place.

Snowden is currently living in Russia, out of reach of US attempts to arrest him.