UK's Cameron: Algeria operation not finished

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This Oct. 8, 2012 satellite image provided by DigitalGlobe shows the Amenas Gas Field in Algeria, which is jointly operated by BP and Norway's Statoil and Algeria's Sonatrach. Algerian special forces launched a rescue operation Thursday at the plant in the Sahara Desert and freed foreign hostages held by al-Qaida-linked militants, but estimates for the number of dead varied wildly from four to dozens. (AP Photo/DigitalGlobe)

LONDON (AP) — British Prime Minister David Cameron says Algerian forces are "still pursuing terrorists" and are looking for hostages at an oil installation in the Sahara desert.

Cameron told lawmakers Friday that Algerian troops are still engaged in an operation to secure a "large and complex site."

He said hostages included Britons, Algerians and nationals of at least seven other countries.

Cameron said 30 Britons had been unaccounted for Thursday, but that number is now considerably reduced

Algerian special forces stormed a gas plant in eastern Algeria on Thursday to wipe out Islamist militants and free hostages from at least 10 countries. The number of dead and injured remains uncertain.

He said extra protection has been added for diplomatic posts and energy facilities in Algeria.