Interior Minister Manuel Valls described the revelations in Le Monde newspaper as "shocking", in an interview with French radio Europe 1.
The spy agency taped 70.3 million phone calls in France over a 30-day period between December 10 and January 8 this year, Le Monde reported in its online version, citing documents from former US security contractor Edward Snowden.
According to the paper, the NSA automatically picked up communications from certain phone numbers in France and recorded text messages under a programme code-named "US-985D."
US authorities declined comment to the French daily on the "classified" documents.
The Le Monde article followed similar revelations by German weekly Der Spiegel that US agents had hacked into the email account of former Mexican president Felipe Calderon.
Mexican authorities have said they will be seeking answers from US officials "as soon as possible" following the allegations.
Snowden, who has taken refuge in Russia, is wanted in the United States for espionage and other charges after leaking details of the NSA's worldwide snooping activities.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
