Americans are still being held hostage in Algeria on the third day of a stand-off with militants at a natural gas complex in the Sahara, a US official said.
State Department spokeswoman Victoria Nuland said the US is working with Algeria and other governments to try to secure their release.
Ms Nuland would not say how many Americans were still being held but the confirmation comes as some Americans were being ferried out of Algeria.
BP evacuated one American along with other foreign workers to Majorca, and then on to London.
An American official said a US military C-130 flew a group people, including some lightly wounded or injured, from Algiers to a US facility in Europe.