President Hollande says reported US spying unacceptable

French President Francois Hollande on Wednesday branded as "unacceptable" reported spying by the United States on Paris.

"France will not tolerate actions that threaten its security and the protection of its interests," the president's office said in a statement as Hollande met top ministers and army commanders in the wake of WikiLeaks reports of U.S. spying on him and his two predecessors.

On Tuesday, Wikileaks said it began publishing the files under the heading "Espionnage Elysee" - a reference to the French presidential palace.

It said the secret files "derive from directly targeted NSA surveillance of the communications" of the three French presidents as well as French ministers and the ambassador to the US.