Terror Strikes London

Four explosions rocked London's subway and bus system during the morning rush hour Thursday, leaving at least 49 people dead and 700 injured. The explosion plunged London into a traffic gridlock with subway service suspended and bus and train services halted for hours.

SOURCES: Staff reports, news services, Times of London, other press reports | Graphics by BY LARIS KARKLIS, DITA SMITH AND FARHANA HOSSAIN - THE WASHINGTON POST and Nelson Hsu - washingtonpost.com

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