Supplementary to its former statement stating that a security authorities chasing operation resulted in the arrest of one suspect, the siege of another three inside a hideout and that the exchange of fire with them resulted in the death of one, injury of another and surrender of the last one, an official source of the Interior Ministry stated today that the nationalities of the four wanted suspects are as follows: three Saudi nationals and one expatriate. However, the investigation authority decided to withhold the details of their identities for the time being, the source said. The source added that search of the site has resulted in the confiscation of the following items: 8 Kalashinkov machine guns together with ammunition; 9-mm revolvers with magazines; 100 locally-made pipe grenades; one high-explosive hand grenades; 4 incendiary bombs; 4 bomb carriers cover; communication devices; 6 knifes; woman clothes; cash worth SR 15,000; and different documents.