Fight between Liverpool and Manchester City fans breaks out on London tube

Police are investigating reports of a violent clash between Liverpool and Manchester City fans before Sunday's Community Shield match at Wembley. Footage circulated on social media showing a group of men fighting on a London Underground train, with the altercation spilling out onto a platform at Great Portland Street station. The British Transport Police say no arrests have yet been made and no injuries reported. Video credit: Twitter - @StevePatten