Saudi authorities on Monday (April 22nd) arrested 13 suspects a day after an attack claimed by the "Islamic State of Iraq and Syria" (ISIS) on a security services base north of Riyadh, AFP reported.
The Saudi Press Agency (SPA), quoting a state security spokesman, said the arrests were part of an investigation by authorities into "terrorist" activities.
Authorities arrested 13 suspects who were "preparing to carry out criminal activities against the security of the country", the SPA said.
It did not say if the arrests were linked to Sunday's attack.
According to the SPA, four men who on Sunday attacked a security services base in the province of Zulfi, northwest of Riyadh, were all Saudi citizens.
The men were killed by security forces as they stormed the building, and three Saudi policemen were wounded in the attack.
ISIS claimed responsibility for Sunday's assault.
