An image grab taken from Saudi Al-Ekhbaria TV on August 6, 2015 shows Saudi security forces inspecting the site of an explosion which was reported triggered by a suicide bomber at a mosque located inside a special forces headquarters in the city of Abha, in the southern province of Asir, near the border with Yemen. The bombing was the most serious in recent months against Saudi security forces, who have been targeted in attacks blamed on the Islamic State group. AFP PHOTO / HO / AL-EKHBARIA
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RIYADH: A suicide bomber struck a mosque in southwestern Saudi Arabia used by Interior Ministry's special forces yesterday, killing at least 15 people, ministry officials said in what was one of the deadliest attacks in the kingdom in recent weeks.

An Interior Ministry statement said 13 were killed and that 10 of those killed were members of the security forces. Security officials later told The Associated Press that two more security personnel were confirmed dead, raising the death toll in the attack to 15.

Earlier, the state-owned Al-Ekhbariya news gave a higher death toll, reporting that 17 had been killed in the attack. It was not immediately clear why there was a discrepancy, but conflicting reports are common in the chaotic aftermath of bombings.

The Islamic State group claimed responsibility for a suicide bomb attack yesterday. The claim, made in an online statement by a group affiliated to IS calling itself "Al-Hijaz Province", said that one of its members detonated an explosive vest inside the mosque in the southern city of Abha.

Interior Ministry spokesman Maj. Gen. Mansour al-Turki said initial findings point to the attack being carried out by a suicide bomber wearing an explosive vest. A Saudi Interior Ministry official told the Associated Press that the bomb targeted police trainees as they were in the middle of prayer. All officials spoke on condition of anonymity because they were not authorized to speak to reporters. It was not immediately clear if the mosque was inside an Interior Ministry compound.

State media reported that the mosque belongs to an Interior Ministry emergency services post in Abha, which is the provincial capital of Asir. State TV carried images in the aftermath of the attack, which showed blood splattered on the walls and ceiling of the mosque, alongside debris.

There was no immediate claim of responsibility. But blame is likely to fall on the Islamic State group, whose local affiliate has claimed responsibility for a number of attacks in recent months, including various deadly shootings and smaller attacks against police at checkpoints in the capital Riyadh.

Deadliest

Yesterday's attack was the deadliest against Saudi security forces since IS attacks first appeared in the kingdom last year. Saudi Interior Minister and Crown Prince Mohammed bin Nayef cut short a visit to Egypt, where he was to attend the inauguration yesterday of an extension of the Suez Canal, to return to Saudi Arabia following news of the attack, officials said.

In May, a suicide bomber struck a Shiite mosque in the eastern village of al-Qudeeh, killing 22 people. That was the deadliest militant assault in the kingdom in more than a decade, and was followed a week later by another suicide bombing outside another eastern Shiite mosque that left four dead.

Both those attacks were claimed by an affiliate of the Islamic State group fighting in Iraq and Syria and which emerged recently in the kingdom as well. Also, in November, a gunman opened fire at a mosque in the eastern Saudi village of al-Ahsa, killing eight people.

Saudi authorities last month announced the arrest of more than 400 suspects in an anti-terrorism sweep. They said at the time that they had thwarted other IS attacks being plotted in the oil-rich kingdom, including a suicide bomb plot targeting a large mosque in eastern Saudi Arabia that can hold 3,000 worshippers, and attempts to attack other mosques, diplomatic missions and security bodies.

Saudi Arabia is also leading a coalition targeting Iran-allied Shiite rebels in neighboring Yemen, not far from Abha. The rebels have carried out a number of cross-border attacks against military targets. - AP