MEXICO CITY, Oct. 20 (Xinhua) -- Mexico on Sunday condemned the alleged spying by the U.S. National Security Agency (NSA) on "Mexican institutions and citizens."
"This practice is unacceptable, unlawful and is contrary to Mexican law and international law," the Mexican foreign ministry said in a statement.
Citing documents from former NSA contractor Edward Snowden, Germany's Spiegel magazine reported Sunday that the NSA illegally accessed in 2010 the email account of then Mexican President Felipe Calderon.
According to the report, in an operation called "Flatliquid," the NSA successfully invaded "a mail server for access to Calderon's account and the Mexican presidential domain used by cabinet members for diplomatic and economic communications."
The foreign ministry said that U.S. President Barack Obama pledged in his most recent meeting with the Mexican President Enrique Pena Nieto to conduct a thorough investigation into the alleged espionage.
That same commitment was confirmed by U.S. Secretary of State John Kerry, during a working meeting in recent days with the Mexican Foreign Minister Jose Antonio Meade, said the ministry
The ministry announced that the Government of Mexico will reiterate in a diplomatic note, "the importance to our country of that investigation, which should be completed very soon."
The NSA said in a statement later Sunday that the United States gathers foreign intelligence of the type gathered by all nations, declining to comment on the specific case reported by Spiegel.
The U.S. government is reviewing the way it gathers intelligence to balance concern for the security of American citizens against privacy concerns, the agency said.