A photographer who was at ground zero on the day of the 9/11 terror attacks has shared his heartbreaking photos, 20 years on. 

Nathan Edwards is the photographer behind some of the most well-known images that emerged in the aftermath.

He told Neil Breen every 100 metres he walked, he’d stop to capture the scenes (see below).

“As I put my camera up to take another photo, the top of the tower started to buckle.”

Press PLAY Below to hear Nathan Edwards describe the scenes

Images: Nathan Edwards