FILE - This is a April 19, 2005 fiel photo released by Statoil via NTB scanpix, shows the Ain Amenas gas field in Algeria, where Islamist militants raided and took hostages Wednesday Jan. 16, 2013. British Prime Minister David Cameron said Algerian forces are "still pursuing terrorists" and looking for hostages at an oil installation in the Sahara desert. Cameron told lawmakers Friday Jan. 18, 2013 that Algerian troops were still engaged in an operation to secure a "large and complex site." (AP Photo/Kjetil Alsvik, Statoil via NTB scanpix, File) NORWAY OUT
