13 people have died after a Saudi Arabia mosque bombing today.
The mosque was one used by security forces close to the Yemeni border, according to a senior Saudi official.
The Islamic State (IS) has previously been responsible for a Saudi Arabia mosque bombing twice, with both attacks occurring in May.
Many of those killed in the attacks were security force involved in the campaign against Shia-led rebels.
The IS is yet to officially claim responsibility for the attacks.