Dramatic, previously unseen, footage of the moment the second plane crashed into the World Trade Centre on September 11, 2001 has been released.
The video was shot through a chain-link fence and shows black smoke pouring from the North Tower as a hijacked jet smashes into the South Tower.
The impact creates a massive fireball in the second skyscraper and then smoke billows upwards.
Papers are seen flying through the air with some of them ending up in the filmmaker's hands.
