A U.S. official says two more Americans were killed in the hostage standoff at a natural gas complex in Algeria, taking the final death toll of U.S. citizens to three.

Seven Americans made it out safely.

The official said Monday that the FBI had recovered the bodies of the Americans and notified their families.

The official had no details on how the Americans died. He spoke on condition of anonymity because he wasn't authorized to speak publicly on the matter.