*RIYADH: Saudi authorities arrested 13 “terrorist” suspects Monday a dayafter an attack claimed by the Islamic State group on a security servicesbase north of the capital, state media said.*

Saudi Press Agency, quoting a state security spokesman, said the arrestswere part of an investigation by authorities into “terrorist” activities.

Authorities, it said, arrested 13 “terrorist” suspects who were “preparingto carry out criminal activities against the security of the country”, theagency said.

But it did not say if the arrests were linked to Sunday’s attack or wherethey took place.

SPA said four men who attacked Sunday a security services base in theprovince of Zulfi, northwest of the capital Riyadh, were all Saudi citizens.

The men were killed by security forces as they stormed the building, andthree Saudi policemen were wounded in the attack.

IS claimed responsibility for Sunday’s assault.

The kingdom has seen numerous attacks in recent years by militants,including Al-Qaeda and IS, against security forces.

It has also seen clashes between “militants” and security forces in theeastern provinces. -APP/AFP