The Brazilian government on Monday summoned the U.S. ambassador over new allegations that the U.S. National Security Agency spy program targeted President Dilma Rousseff.
U.S. Ambassador Thomas Shannon met with Brazilian Foreign Minister Luiz Alberto Figueiredo, following a report on Brazil's Globo TV that the United States spied on Ms. Rousseff and Mexican President Enrique Pena Nieto.
The U.S. Embassy in Brasilia declined to comment on the meeting.
During a Sunday broadcast, U.S. journalist Glenn Greenwald, a columnist for the Guardian newspaper, said he received documents from NSA leaker Edward Snowden showing the United States intercepted the communications of the Brazilian leader, including emails and telephone calls.
Greenwald also told Globo that a document dated June 2012 showed the communications of Mexican President Enrique Pena Nieto were being monitored one month before he was elected.
Ms. Rousseff is expected to travel to Washington in October for a state visit.
Former NSA contractor Snowden fled the United States in June, and then provided troves of classified material about NSA surveillance practices to U.S. and foreign media. He currently resides in Russia, which granted him temporary asylum last month.
He faces U.S. federal charges of espionage, and the theft and conversion of government property.