RIYADH — A suicide bomb attack on the mosque of a local security force headquarters in Abha city in south west Saudi Arabia killed 14 people on Thursday, most of them members of the force, the Saudi interior ministry said.

The mosque in Abha, the capital of Asir province, was part of the local headquarters of the Special Emergency Force, the interior ministry security spokesman told state news agency SPA. The ministry earlier put the toll at 13, but later reported four of the wounded had died.

ISIS claimed responsibility for the attack.

Of those killed, 12 were members of the force, while three were workers in the compound, according to the ministry.

Men were praying in the mosque when the bomber struck within their ranks. The debris of the blast appeared to show an explosive belt had been used, the spokesman said.

In May, two suicide bomb attacks on Shi’a mosques in Saudi Arabia were claimed by ISIS. The first on a mosque in Qatif in the east of the kingdom killed 21 worshippers and another four died in a bombing a week later at a mosque in Dammam.

Another bombing claimed by ISIS on a Shi’a mosque in Kuwait in June killed 27 people.

The militant group, bitterly opposed to Gulf Arab rulers, is trying to stir sectarian confrontation on the Arabian peninsula to bring about the overthrow of the states’ ruling dynasties.