WASHINGTON -- An online magazine reported Wednesday that the National Security Agency and the FBI covertly scanned the emails of five prominent Muslim-Americans under the government's secret surveillance program aimed at foreign terrorists and other national security threats.

The report in The Intercept, a venture by journalist Glenn Greenwald, said the targets included an attorney, a Republican political operative, a university professor and two civil-rights activists. The Intercept said all five denied any involvement in terrorism or espionage and had not been accused of any crimes. The magazine questioned whether the government obtained legal permission for its surveillance.

The Intercept account said a three-month investigation using classified documents obtained from former NSA contract systems analyst Edward Snowden showed that "the system for authorizing NSA surveillance affords the government wide latitude in spying on US citizens." The article also states that some government training materials included a slur against Muslims.

NSA and Justice Department officials denied Wednesday that American activists are targeted for criticizing the government. While not discussing the individual cases, officials said Americans are targeted for email surveillance only if there is probable cause.

"It is entirely false that US intelligence agencies conduct electronic surveillance of political, religious or activist figures solely because they disagree with public policies or criticize the government, or for exercising constitutional rights," the NSA and Justice Department said in a joint statement.

But the White House on Wednesday ordered national security agencies to review their training and policy manuals in light of the article's assertion that a 2005 government training document contained an anti-Muslim slur.

"Upon learning of this matter, the White House immediately requested that the Director of National Intelligence undertake an assessment of Intelligence Community policies, training standards or directives that promote diversity and tolerance," said Caitlin Hayden, a White House national security spokesman.

Hayden said that "the use of racial or ethnic stereotypes, slurs or other similar language" was unacceptable. The government ordered a similar review in 2011 after several training instructors told national security and military participants that mainstream Muslims supported violence.

Responding to the Intercept report, a coalition of 44 civil liberties groups including the American Civil Liberties Union sent a letter Wednesday to President Barack Obama urging a "full public accounting" about the purported domestic surveillance. The group also asked for a meeting with Obama, Attorney General Eric Holder and FBI Director James Comey.

The Intercept report is not the first account to suggest Americans' emails have been swept up by the government. Documents leaked by Snowden, now a fugitive in Russia from a U.S. law enforcement investigation, have shown that emails and other electronic files from thousands of Americans were scanned by the NSA's extensive worldwide intercepts aimed at foreign users suspected of terror connections and other threats.

Declassified legal documents released over the past year by the Obama administration also acknowledged that Americans' Web traffic is accidentally swept up, but separated out by "minimization" techniques. A recent Washington Post report based on Snowden files warned that such accidental sweeps pick up far more U.S. Web traffic than officials have acknowledged and that the material can be held indefinitely by the government in secret repositories.

The Intercept account suggests that in addition to such accidental sweeps, American citizens are sometimes intentionally targeted under the same foreign-targeted surveillance. The magazine identified the targeted Muslim-Americans as lawyer Asim Ghafoor; GOP operative Faisal Gill; Rutgers University professor Hooshang Amirahmadi; activist Agha Saeed; and Nihad Awad, executive director of the Council of American-Islamic Relations, a Muslim civil-rights group.

All five raised questions in the account about why their emails would have been targeted by surveillance. The report said that several of the men had been subjected to previous government inquiries.

Gill, who worked for the Department of Homeland Security during the George W. Bush administration, was scrutinized by the department in 2003 after his name turned up in a national security investigation. He was cleared in a later inspector general's report, the Intercept account said.

Ghafar had done legal work for an Islamic charity targeted by Treasury Department sanctions for suspected terror ties. Saeed told the Intercept he may have been targeted for his friendship with a south Florida activist who pleaded guilty to aiding a Palestinian militant group.

Amirahmadi has twice tried to run for president of Iran.

Awad's group was named as an unindicted co-conspirator in the government's prosecution of the Holy Land Foundation, once the biggest Islamic charity in the U.S, but which has been scrutinized for its ties to Hamas, a Palestinian group branded by the U.S. as a terror organization.

Meanwhile, Snowden's lawyer said he had asked the Moscow branch of the Federal Migration Service to permit Snowden to remain in Russia after his initial one-year asylum expires July 31.

Anatoly Kucherena avoided spelling out the grounds for the application, saying the Russian government would ultimately determine that.

"I will not say for now under which status we would like to get this extension because the decision rests with the Federal Migration Service," he said.

Snowden, 31, fled the United States last summer and was charged with espionage and theft of government property. His supporters call him a hero, while critics label him a turncoat.

He ended up in Russia in June of last year. Seeking to travel from Hong Kong to Latin America, he was transiting through Moscow when the United States revoked his passport.

Information for this article was contributed by Stephen Braun of The Associated Press and by Neil MacFarquhar of The New York Times.

A Section on 07/10/2014