An astonishing new video of the 9/11 attack on the World Trade Center in New York has emerged online more than 20 years after the tragic events of September 11, 2001.
The never-before-seen clip, which is almost nine minutes long, was shared on YouTube by Kevin Westley last week and since then has been viewed more than 522,000 times.
It shows a previously unseen angle of the second plane hitting the World Trade Center's South Tower, seventeen minutes after the North Tower was hit by American Airlines flight 11.
