Satelite view of Baga before and after the boko haram carnage.

The destruction caused by Islamist militants in Nigeria when they slaughtered an estimated 2,500 people, have been revealed in shocking new satellite images.

Terror group Boko Haram outraged the world last week when they indiscriminately murdered innocent men, women and children as they attacked the towns of Baga and Doron Baga.

Now, new images obtained by Amnesty International show how the towns were devastated by the assault - with more than 3,700 structures including houses and schools completely destroyed.

In the pictures taken beforehand, the areas in red show buildings and trees in the densely packed towns in the north of the country.

But in the pictures taken after the massacre, they have been decimated and the infra-red satellite images instead reveal grey areas where the militants savagely razed the towns.So who is lying to who because the Army spokesman says only 150 people died?