British police say they have arrested an 18-year-old man in their investigation into the bombing of a London Underground train.
At least 22 people are injured after a bomb detonated on a packed London Underground train during the morning rush hour in what police are treating as a "terrorist incident".
British police say they have arrested an 18-year-old man in their investigation into the bombing of a London Underground train.
At least 22 people are injured after a bomb detonated on a packed London Underground train during the morning rush hour in what police are treating as a "terrorist incident".