Censor.NET reports citing The Guardian.
The first victim of the attack was named as an Italian father of two, Bruno Gulotta. He was on holiday with his partner and children, according to his workmates.
100 persons were injured in the attack.
Spanish police are hunting Moussa Oukabir, the teenager who is suspected of being the driver of the van.
Two suspects arrested on Thursday are being held on suspicion of links to the Barcelona attack, but police say neither of them was the driver.
Authorities say the subsequent attack in Cambrils is linked to the terrorist assault on Barcelona.
Isis has claimed responsibility for the attack in Las Ramblas, but this could not be verified.
A man drove a van into pedestrians in Las Ramblas, killing 13 people and injuring 100.
Related materials: Barcelona attack