Photojournalist Bill Biggart's last 9/11 image goes viral on social media on 23rd anniversary

One of the haunting last images captured by photojournalist Bill Biggart, who died while covering the 9/11 attacks in the USA, has gone viral. It shows the collapsing remains of Tower 2 of World Trade Center which was razed to ground during the Sept 11 suicide attack when the terrorists seized US passenger jets and crashed them into the two iconic New York skyscrapers.