Police cordon off a nearby street following a terrorist attack in central Barcelona, Spain, on Aug. 18, 2017. (Xinhua/Ying Qiang)

The number of people killed in Thursday's double terror attacks rose to 14, after a woman died of injuries at the Joan XXIII hospital, the Catalan emergency services confirmed on Friday.

"A woman injured yesterday in #Cambrils attack has died. 14 citizens died yesterday in #Barcelona and #Cambrils terrorist attacks," the emergency services tweeted.

The woman had been injured along with five other people after a vehicle ran over several people in the Catalan resort town of Cambrils, about 100 kilometers southwest of Barcelona.

The five alleged terrorists armed with knives were taken down by Catalan police in a shootout.

Hours earlier, at Barcelona's iconic Las Ramblas street, 13 people were killed and more than 100 others injured when a van rammed into people in the pedestrian area.

The van driver was still at large and three people were arrested due to the attack, according to local police.

Catalan emergency services also said number of the injured has risen to 130 in the double terror attacks.

The victims of the double attacks are of 34 nationalities.

"The fatalities and injuries of the #Cambrils attacks and #Barcelona are, according to a provisional assessment, of 34 different nationalities," the service posted on its Twitter account.