US-led forces during an air patrol in Afghanistan.
Afghan officials say the US-led NATO forces have been using internationally prohibited bombs against civilians in the war torn country.
Last week, over 60 Afghan civilians lost their lives during NATO airstrikes on residential areas in the eastern province of Kunar.
Afghan studies on the unexploded munitions have revealed that each weapon is a combination of cluster and penetrator bombs.
The studies say once the combination bomb breaks into 20 pieces before it touches the ground.
Each piece then transforms into a penetrator warhead which burrows into the soil, causing an underground explosion. The device creates shockwaves that resemble an earth tremor.
The blast kills every living thing within a small radius of its explosion.
An experimental US weapon called Dense Inert Metal Explosive (DIME) has a relatively small but effective blast radius.
A recent US Department of Health and Human Services study has found that the shrapnel rapidly induces cancers in people.
The sturdy comes as thousands of Afghan people have so far lost their lives due to military operations by foreign troops since the 2001 US-led invasion.
Afghan officials including President Hamid Karzai have repeatedly called for an end to attacks on civilians.
Civilians are the main victims of the US-led military operations in Afghanistan.
