An unidentified hostage who spoke to France 24 television said prisoners were being forced to wear explosive belts. Their captors were heavily armed and had threatened to blow up the plant if the Algerian army tried to storm it.
Two hostages, identified as British and Irish, spoke to Al Jazeera television and called on the Algerian army to withdraw from the area to avoid casualties.
"We are receiving care and good treatment from the kidnappers. The (Algerian) army did not withdraw and they are firing at the camp," the British man said. "There are around 150 Algerian hostages. We say to everybody that negotiations is a sign of strength and will spare many any loss of life."
Reuters adds that US, French, and British officials did not confirm the numbers of their respective citizens who were being held by the terrorist group.