Algerian forces have scoured the Sahara Desert, searching for five foreign workers who vanished during the four-day hostage crisis in Algeria.
One official says the men may have fled the sprawling complex during the fighting and gotten lost.
In all, 37 hostages, including an Algerian security guard, and 29 militants were killed, but five other foreign workers remain unaccounted for.
"Are they dead? Are they lost in the desert after taking a wrong turn?" an official said. "Everything is being done to know their fate." The Ain Amenas gas plant is located deep in the Sahara, 1,300 kilometres from the coast, with few population centres nearby.