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BARCELONA, SPAIN - AUGUST 17:  Paramedics are seen near to the scene of a terrorist attack in the Las Ramblas area on August 17, 2017 in Barcelona, Spain. Officials say 13 people are confirmed dead and at least 50 injured after a van plowed into people in the Las Ramblas area of the city this afternoon.  (Photo by David Ramos/Getty Images)
BARCELONA, SPAIN - AUGUST 17:  Paramedics are seen near to the scene of a terrorist attack in the Las Ramblas area on August 17, 2017 in Barcelona, Spain. Officials say 13 people are confirmed dead and at least 50 injured after a van plowed into people in the Las Ramblas area of the city this afternoon.  (Photo by David Ramos/Getty Images)

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How Barcelona attack unfolded in tourist area

CNN's Tom Foreman reports on the terror attack that police say has killed at least 13 people.

How Barcelona attack unfolded in tourist area

CNN's Tom Foreman reports on the terror attack that police say has killed at least 13 people.