RIO DE JANEIRO — The international tensions stirred up by recent revelations about American spying spread to yet another nation on Sunday, when Brazil’s foreign minister expressed “deep concern” over the issue and said his government would press the United Nations to take action that “preserves the sovereignty of all countries.”

Reacting to a local news report asserting that the United States has been collecting data on telephone calls and e-mail traffic in Brazil, the foreign minister, Antonio Patriota, said Sunday that his government would pursue United Nations measures “to impede abuses and protect the privacy” of international Internet communications to “guarantee cybersecurity that protects the rights of citizens.”

Mr. Patriota said that his government was taking action because of its “deep concern at the report that electronic and telephone communications of Brazilian citizens are being the object of espionage by organs of American intelligence.” For the same reason, he added, Brazil has also “asked for clarifications” from the American government.

The report on the American monitoring of Brazilian communications was published by O Globo, the main daily newspaper here, and said it was based on documents from Edward J. Snowden, the fugitive contractor for the National Security Agency. His disclosures have ruffled relations between the United States and an array of its allies and adversaries, including China, Russia, Europe and a widening swath of Latin America.