World Bulletin / News Desk

Spain's public prosecutor launched a preliminary inquiry on Tuesday into reports that U.S. intelligence has spied on million of its citizens.

Attorney General Eduardo Torres-Dulce authorised an information gathering process after El Mundo newspaper reported on Monday that the United States had tracked more than 60 million Spanish phone calls, his office said in a statement.

Spain summoned the U.S. ambassador on Monday to discuss the allegations, which are similar to reports of U.S. spying in France and Germany that have caused a rare diplomatic upset between the Washington and its European allies.

Foreign Minister Jose Manuel Garcia-Margallo said if the reports were true it would break the "climate of trust" between the two countries.

El Mundo published a graphic it said was a National Security Agency (NSA) document showing the U.S. agency had spied on 60.5 million phone calls in Spain between Dec. 10, 2012 and Jan. 8 this year. It said the document was part of papers obtained from ex-NSA contractor Edward Snowden.

On a visit to Lithuania on Tuesday, Garcia-Margallo stressed Spain's close ties with the United States and said negotiations over a European free-trade agreement would not stop.

"We work very closely with USA on security, we have some common topics where our positions are the same," he told a news conference.