NEW YORK: The Washington Post and The Guardian won the Pulitzer Prize in public service for revealing the US government’s sweeping surveillance programs in a blockbuster series of stories based on secret documents supplied by NSA leaker Edward Snowden.

The Pulitzer for breaking news was awarded to The Boston Globe for its “exhaustive and empathetic” coverage of the Boston Marathon bombing and the manhunt that followed.

Two of the nation’s biggest and most distinguished newspapers, The Post and The New York Times, won two Pulitzers each on Monday, while the other awards were scattered among a variety of publications large and small.

The stories about the National Security Agency’s spy programs revealed that the government has systematically collected information about millions of Americans’ phone calls and e-mails in its effort to head off terrorist attacks. The resulting furor led President Barack Obama to impose limits on the surveillance.