Police in northeastern Spain say they have arrested 10 people for suspected links to jihadi terror activity and the Islamic State armed group.

A Catalan regional police statement said the arrests took place Wednesday in five northeastern towns, including the regional capital of Catalonia, Barcelona.

It said some 360 Mossos d'Esquadra regional police officers took part in 13 raids in one of the region's biggest operations against jihadi activity. The operation was coordinated by the National Court in Madrid.

Spain has arrested dozens of suspected jihadi militants and recruiters in recent years.

Last week, police in Catalonia arrested four members of a family, including 16-year-old twin boys who were allegedly about to travel to Syria to become jihadi fighters.