Algeria hostage crisis: al Qaeda had help from inside claim security sources "One gave himself up after running out of munitions, while two more were picked up by Algerian special forces after being injured," one local security source told The Daily Telegraph. With the military operation over, forensic scientists from Algeria's national gendarmerie arrived yesterday to begin the macabre task of identifying the bodies. Civil protection workers said they had spent Sunday retrieving a gruesome list of body parts - "fingers, hands, feet, legs" - as they sought to piece together who had been killed in a deadly mix of machine gunfire, terrorist explosions and helicopter gunship attacks. Security services said 25 further bodies were recovered yesterday, with differing reports over how many were hostages. Citing security sources, Anis Rahmani of private television channel Ennahar said all 25 were captives, but The Daily Telegraph was told that 15 of their number were militants. Either way, Algerian communications minister Mohamed Said made it clear that earlier provisional figures for the number of dead - 23 hostages and 32 kidnappers - would likely have to be "revised upward." A civil protection source said that the overall death toll, including kidnappers and hostages was between 55 and 60, with roughly half foreign hostages. William Hague, the foreign secretary, said yesterday that some of those hostages are likely to have been executed. Last night, bomb squads were still combing the area for explosive devices, with the army saying the kidnappers had placed mines beneath the sand around the factory to hinder the army's advance, but also inside the plant. Sonatrach, the Algerian state oil company running the Ain Amenas site along with BP and Norway's Statoil, confirmed the entire refinery had been mined. "They had decided to succeed in the operation as planned, to blow up the gas complex and kill all the hostages," said communications minister Mohamed Said. The revelation though of the possibility of an 'inside job" follows expressions of surprise by security experts at the apparent ease with which the terrorists loyal to Mokhtar Belmokhtar, the one-eyed Islamist who formed his own brigade, the "Signatories in Blood," penetrated the plant. It was the first successful terrorist attack against a petrol or gas plant in Algeria. These installations are highly protected. The operation must have been prepared over quite some time. Either there was a slip up or it was internal complicity," said Louis Caprioli, adviser at GEOs, the risk management group and a former domestic intelligence agent. A spokesman for BP refused to be drawn on the possible security beach: "We wouldn't comment on this," he said. Last night it was confirmed that the apparent leader of the militants, Abdul Rahman al-Nigeri, was ready at any time to blow up the hostages. Another of the kidnappers was identified as Abdallahi Ould Hmida. An al Qaeda veteran of 14 years loyal to Belmokhtar, he played a role in the assassination of French tourists in Mauritania in 2010, earning himself the nickname of the "Mauritanian Zarkaoui." Yesterday, the local population in In Amenas was in a state of total shock. This is the first time we have heard the name of our town in the mouths of David Cameron and Barack Obama. We are furious about this terrorist strike," one local The Daily Telegraph. The army yesterday had erected a roadblock some 16km from the gas plant, with no journalists or photographers allowed near the site. With huge question marks over the details of the operation and the number of deaths, the Algerian prime minister has pledged to hold a press conference in the town to clarify the situation.