Recent terror attacks are tied to radical Islam, the head of Poland's National Security Bureau (BBN), Paweł Soloch, has said following attacks in Spain.

On Thursday, a van mowed down pedestrians on a popular strip in Barcelona, western Spain, killing 13 and injuring more than 100 others, while an attack in Cambrils, south of Barcelona, saw another death.

Soloch told Polish state broadcaster TVP on Monday that there were ties between the attacks and "at least certain factions of ... radical Islam" because "terrorist propaganda ... refers to Islamic religion and is undoubtedly linked with religion".

Read the complete original version of this item...