Google Earth maps are being used by terrorists to locate and attack British bases in Basra, report Army intelligence sources.

During raids on the insurgents’ homes last week, sets of photographs were uncovered from Google’s mapping tool showing the location of a Basra Palace base where 1,000 British troops are based. There have also been reports of the maps being sold in markets in Basra.

Soldiers from the army base said that they would consider suing Google Earth if they were injured by rounds directed by aerial footage.

The maps could be of limited tactical use as many of the images were taken up to two years ago but they may still provide information regarding areas where hardened bunkers are located. There is also concern that terrorists could examine the British security service’s London headquarters.

Since finding the maps, intelligence chiefs have been keeping track of where rounds are fired to see if the maps are being used to target weak areas. Google has also opened channels with the military in Iraq but is not prepared to comment on what’s been discussed.