ISIS has claimed previous attacks on Saudi security forces. (AFP File Photo)
A retired security officer in southern Saudi Arabia has been shot dead in an attack claimed today by the ISIS.
Police spokesman Colonel Mohammed al-Harbi said that a man in the Abu Arish area of Jazan region, bordering Yemen, reported at about 2:30 am (1130 GMT Sunday) that his father "was being shot at from an unknown source at his farm".
Police did not identify the victim or give further details of his former security duties.
They said a "criminal investigation" was under way into the killing. Usually the Saudi authorities describe ISIS-related attacks as "terrorism".
ISIS said in a statement that it had shot dead retired Brigadier Ahmed Fayie Assiri "at his farm in Abu Arish area of Jazan."
ISIS has claimed previous attacks on Saudi security forces as well as deadly bombings and shootings that targeted the Sunni kingdom's Shiite minority, which the ISIS group considers to be heretics.
Jazan and other southern border districts have also been subjected to shelling from Yemen since last March when Saudi Arabia began leading an Arab military coalition against Huthi rebels in the neighbouring country.