18 images show how the deadly Barcelona van attack unfolded

ISIS has claimed responsibility for a van attack in Spain's historic Las Ramblas district in Barcelona, where at least 13 people were killed and some 100 were injured.

The square had been buzzing with tourists and residents when a white van jumped the curb and plowed into pedestrians on Thursday.

First-responders flooded the scene, cordoning off the street and tending to the injured. Two suspects are reportedly in custody, not including the driver of the van who was still at large early Friday morning.

Here's how the day's tragic events unfolded in Barcelona: