Saudi Arabia said it has killed 19 militants after a raid on a mosque in the Eastern Province in the country’s Eastern Province, state news agency SPA said.
The ministry said it was an attack on a militant camp in the area.
It said security forces were killed and a number of militants were wounded in the attack.
Saudi Arabia has been battling an insurgency by the group in neighbouring Yemen since March 2015.
Abdullah bin Abdullah bin Abdulaziz al-Sheikh, a senior commander in the group, is believed to be the leader of the raid.
The attacks came amid the crisis in Yemen, where Saudi-led coalition airstrikes have hit targets in the capital, Sanaa, and the southwestern port city of Aden.
There has been widespread anger over the bombing campaign, with protesters in Yemen protesting against the Saudi-backed government.