Barcelona terror attack: People run in fear as attack unfolds

Footage of pedestrians fleeing the terror attack in Barcelona shows people crying and screaming in fear as they try to get to safety.

Twitter user  Alex Luque claimed to have been within six metres of the attack, he posted a video of himself running from the scene with his sister.

"Something happening in Barcelona. A van has intentionally run into plenty of people," he wrote.

The footage captured hundreds of people running and screaming as they fled the scene.

Police have arrested two men in relation to the attack on pedestrians on Las Ramblas that has left at least 13 people dead and 80 people hospitalised.

Spanish media reported that a suspect in the attack has been killed in a shootout with police.