British Police Make ‘Significant Arrest’ in Subway Bombing<br />LONDON — The British police said on Saturday that they had arrested an 18-year-old man in connection with the terrorist explosion in a London subway station<br />that injured at least 30 people and unleashed panic among fleeing passengers.<br />Britain raised its terror threat level to “critical,” the highest level, after the explosion, meaning<br />that another assault was “expected imminently.” Mr. Basu said on Saturday that the threat level would remain that way as the investigation continued.<br />Britain was hit by a terrorist attack on Friday morning, when a crude device exploded on a crowded London Underground train.<br />As part of the bombing investigation, armed officers on Saturday were searching at least one house in Sunbury-on-Thames, on the outskirts of the capital<br />and about three miles from Heathrow Airport in London, according to The Associated Press, the BBC and other local news outlets.<br />“We have made a significant arrest in our investigation this morning,” Deputy Assistant Commissioner Neil<br />Basu, the top counterterrorism official at the Metropolitan Police in London, said in a statement.
