ALGIERS, Algeria — Algerian bomb squads searched a gas refinery laced with mines on Monday, looking for more explosive traps a day after the discovery of more bodies throughout the site raised the toll from the terrorist siege well past 80.

Special forces from the Algerian military stormed the plant on Saturday to end the four-day siege, then the government began the painstaking work of finding and defusing the explosives planted in what government officials said was a plot by the Islamic extremists to blow up the complex and kill all their captives.

In a statement, the Masked Brigade, the group that claimed to have masterminded the takeover, warned of more such attacks against any country backing France's military intervention in neighboring Mali, where the French are trying to stop an advance by Islamic extremists.