Two Obama administration officials say DNA evidence has proven that Usama bin Laden is dead, with 99.9 percent confidence.

The officials did not immediately say where or how the testing was done, but the test explains why President Obama was confident to announce bin Laden's death to the world Sunday night.

A senior U.S. official told Fox News that a Navy SEAL from Team Six, a top military counterterrorism unit, identified Bin Laden by his face. The official said the Al Qaeda leader did not appear to be ravaged or starved from his years in hiding, saying it appeared Bin Laden had been living well.

The official also said the SEALs used "facial recognition pulls" to confirm Bin Laden's identity on site by comparing his height, ears, nose and mouth to known photos of him.

The official said the White House is still deciding on when and how to released the photo of Bin Laden to avoid any conspiracy theories about his death. The official said it is believed that only the U.S. is in possession of the photo.

Fox News' Catherine Herridge and the Associated Press contributed to this report