ALGERIA—Sources are reporting that at least 37 foreign hostages and an Algerian died in the kidnapping and assault on a natural gas plant.
Five other hostages are still missing.
According to a senior U.S. administration official, three Americans are among the dead.
The crisis began Wednesday when a group of militants rushed the plant and took dozens of foreign workers hostage.
They placed explosives throughout the facility.
At one point, the Algerians performed a rescue attempt, which failed and resulted in the deaths of an unknown number of hostages and kidnappers.
Saturday, the group tried another rescue attempt.
During this latest rescue attempt, 29 militants died along with several of the hostages.
Seven Americans were freed from the plant.
The kidnappers said the attack was in retaliation for Algeria allowing France to use its airspace to battle Islamist militants in Mali. However, analysts believe the operation was too sophisticated to have been planned so quickly.