The hostage crisis in eastern Algeria is over, but the questions remain. Among them, exactly  how many people are unaccounted for at a remote natural gas facility after three days of chaos that ended

Some 685 Algerian workers and 107 foreigners were freed, the Algerian interior ministry said.

“Search efforts are ongoing at the installation , looking for more possible victims. I fear the numbers will be updated with more victims later today when the search operation is expected to end,” said Mohammed Said, the Algerian transportation minister.

Attackers are members of six nationalities, including Arabs, Africans and other non-African nations, he told state-run Radio Algeria.

In a statement Saturday night , the White House said it remained in close contact with the Algerian government to “gain a fuller understanding of what took place.”

The State Department , meanwhile , warned against travel to Algeria.

In the United Kingdom , British Foreign Secretary William  Hugue ecjoed the White House’s remark , saying his government too was “working hard to get definitive information” about each individual.

American and Britons were among those held hostage as were workers from various other nations.