ALGIERS, Algeria (AP) — An Algerian security official says bomb squads scouring a gas plant where radical Islamists took dozens of foreign workers hostage have found 25 more bodies.

The state of some of the bodies discovered Sunday, a day after a bloody raid ended a four-day siege at the plant in the Sahara desert, is making it difficult to tell whether the dead were hostages or the attackers, the official said. He spoke on condition of anonymity because of the sensitivity of the subject.

Algerian authorities said on Saturday that 23 hostages and 32 captors were known to have died but that those figures were expected to rise.