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- Police searching for assailant who detonated bomb in London subway car, injuring at least 29Washington Post
- Parsons Green: UK terror threat increased to critical after Tube bombBBC News
- Terror in London . . . AgainNational Review
- UK raises terror alert level after London attack injures 22Financial Times
- Terrorist Device Detonates on London Subway, Injuring CommutersNBCNews.com