PARIS, June 23 -- French high-level officials, including French president Francois Hollande, ex-presidents Nicolas Sarkozy and Jacques Chirac, and French cabinet ministers, were surveilled by the National Security Agency (NSA) of the United States, said Tuesday a press release of WikiLeaks.

From Tuesday, WikiLeaks began publishing "Espionnage Elysee", a collection of TOP SECRET intelligence reports and technical documents from NSA concerning targeting and signals intelligence intercepts of the communications of high-level officials from successive French governments over the last ten years, said WikiLeaks.

"The documents also contain the 'selectors' from the target list, detailing the cell phone numbers of numerous officials in the Elysee up to and including the direct cell phone of the President," the press release said.

According to WikiLeaks, the to-be-published documents are intelligence summaries of conversations between French government officials concerning some of the most pressing issues facing Franceand the international community, including a dispute between the French and U.S. governments over U.S. spying on France.

"The French people have a right to know that their elected government is subject to hostile surveillance from a supposed ally," said WikiLeaks founder Julian Assange, adding that "French readers can expect more timely and important revelations in the near future."

This revelation of American's spying against French leaders came not long after Germanyopened an investigation to American's tapping German Chancellor Angela Merkeland other German officials.

France is formally a close ally of the United States, and plays a key role in a number of U.S.-associated international institutions, including the Group of 7 (G7) and NATO.