Parsons Green explained: Terror attack on London Tube HD

On September 15th 2017, an explosion went off onboard a crowded Tube train in London. Witnesses described a ‘huge fireball’ in the carriage at Parsons Green, sending a ‘wall of flame’ through the carriage. 29 people were hurt, none seriously. Here’s everything you need to know. Subscribe to us and get more videos from Channel 4 News https://www.youtube.com/c/channel4news