ISIS Claims Responsibility for London Blast, Britain Raises Threat Level to Highest Rank

Police vehicles line the street near Parsons Green tube station in London, Britain on Sept. 15, 2017. REUTERS/Kevin Coombs

LONDON—A home-made bomb on a packed rush-hour commuter train in London engulfed a carriage in flames and injured 29 people on Friday, but apparently failed to fully explode, in Britain’s fifth major terrorism incident this year.

Passengers heading into the British capital fled in panic after the blast as the train was about to depart Parsons Green station in West London at 8:20 a.m. (0720 GMT).