( CNN ) -- Unacceptable . Illegitimate . And against the law . That 's how the Mexican government responded Sunday to new allegations of U.S. spying reported by Der Spiegel . According to the German news magazine , the National Security Agency `` systematically '' eavesdropped on the government . It hacked the public e-mail account of former Mexican President Felipe Calderon , which was also used by Cabinet members , Der Spiegel said . The magazine quoted documents leaked by former NSA contractor Edward Snowden . Snowden deserves a Nobel Prize , his father says . `` This practice is unacceptable , illegitimate and against Mexican and international law , '' Mexico 's foreign ministry said in a statement . It added that it would push for speedy investigation . `` In a relationship between neighbors and partners , there is no room for the practices alleged to have taken place , '' the ministry said . A senior U.S. State Department official told CNN that the Mexican government reached out about the report , and that the two governments will be discussing it via diplomatic channels . The NSA said it would not `` comment publicly on every specific alleged intelligence activity , and as a matter of policy we have made clear that the United States gathers foreign intelligence of the type gathered by all nations . Report : U.S. intercepts French phone calls on a 'massive scale ' `` As the President said in his speech at the U.N. General Assembly , we 've begun to review the way that we gather intelligence , so that we properly balance the legitimate security concerns of our citizens and allies with the privacy concerns that all people share , '' the agency added . In September , Mexico and Brazil summoned U.S. ambassadors after media reports that the United States had spied on their countries ' presidents . A Brazilian news report described the alleged espionage , citing Glenn Greenwald , a Brazil-based journalist who similarly obtained documents from Snowden . One of the alleged NSA documents leaked to Greenwald dates from June 2012 , a month before Mexican President Enrique Pena Nieto was elected . In it , the candidate talks about whom he would select for his Cabinet if elected . The documents did not reference any specific communications with Brazilian President Dilma Rousseff but show the methods the NSA allegedly used to track e-mails and mobile phone communications with close advisers . `` It was very clear in the documents that they had already carried out the spying , '' Greenwald told Globo TV 's Sunday night program `` Fantastico . '' `` They are n't talking about something they are planning ; they are celebrating their spying successes . '' NSA mines Facebook for connections . CNN 's Elise Labott , Evan Perez , Shasta Darlington and Catherine E. Shoichet contributed to this report .
Der Spiegel : NSA `` systematically '' eavesdropped on Mexican government . It hacked into public e-mail of former president , according to the German news magazine . Mexico calls for a speedy investigation into the allegations . NSA : `` The U.S. gathers foreign intelligence of the type gathered by all nations ''