An eighteen year old man has been taken into custody in Dover by Kent Police over London Tube blast. He was taken to a local police station and held. Thirty people were injured after the explosion on a train at Parsons Green. Most people were treated for minor injuries and have been released but three people remain in hospital, reports say.
According to reports, the UK terror threat level has been raised to its highest level of "critical" after the Parsons Green Tube bombing - meaning an attack may be imminent.