US media giant, ABC, has released a series of aerial photos of the terrorist attack on the World Trade Center in New York on September 11th, 2001.

 

The images show the twin towers going down from a dramatic new angle.

The pictures were obtained by ABC News from the National Institute of Standards and Technology.

The organization collected the images as part of its investigation into the devastating terrorist attack. The photos were taken from police helicopters. Many of the pictures have never been released before.