WASHINGTON - US espionage chiefs turned the tables on European allies in the transatlantic spat over intercepted phone records, saying in many cases it was European agencies - not the NSA - that gathered and shared them with America.
They dismissed as "completely false" allegations that American spy agencies had swept up data on millions of phone calls, and said European newspapers that had made those claims did not understand the data they were using to make the allegations.
The assertion came as a senior official said President Barack Obama was considering banning US spies from tapping the telephones of allied leaders, in the wake of German outrage over alleged snooping on Chancellor Angela Merkel's communications.
America's European allies have spent days angrily protesting after newspaper reports, based on leaks from fugitive analyst Edward Snowden, that Washington collected tens of millions of telephone calls and online communications in Europe as part as a vast anti-terror sweep.
General Keith Alexander, head of the National Security Agency, and the Director of National Intelligence James Clapper testified to Congress that the reports were based on a misunderstanding of information passed by Snowden to European newspapers.
"The assertions by reporters in France, Spain, Italy that NSA collected tens of millions of phone calls are completely false," Alexander told the House Intelligence Committee.
"To be perfectly clear, this is not information that we collected on European citizens," he said.
Hours earlier, the Wall Street Journal reported that electronic spying was carried out by the intelligence agencies of France and Spain outside their own borders and sometimes in war zones and was then passed onto the NSA.
The claims, if true, could embarrass European governments which have vehemently protested to the United States about alleged overreaching and infringements on the privacy of their citizens by the NSA.