William Booth Karla Adam Rick Noack The Washington Post

Police in London were searching for the assailant who detonated a homemade bomb Friday that sent a scorching blast of flame and smoke through a London subway car, injuring at least 29 rush-hour commuters and sending panicked crowds scrambling for safety in what police called a terrorist incident.

Police in London were searching for the assailant who detonated a homemade bomb Friday that sent a scorching blast of flame and smoke through a London subway car, injuring at least 29 rush-hour commuters and sending panicked crowds scrambling for safety in what police called a terrorist incident.