FOX News has learned that President Obama has been briefed on a "specific, credible" threat surrounding the 9/11 ten year Anniversary.

FOX's Jennifer Griffin has more from the Pentagon:

In a press conference Thursday night, city and federal officials addressed the threat and the response to it.

NYC Police Commissioner Raymond Kelly says they're stepping up security:

FBI New York Field Office Assistant Director-in-Charge Janice Fedarcyk also spoke:

Tune into your local FOX News Radio affiliate for more on this developing story.