The United Nations Security Council and Arab countries condemned the recent terrorist bombing in a mosque in Saudi Arabia, in which 17 people were killed.
The Saudi Arabia Interior Ministry issued a statement declaring this bombing took place when a number of security forces were holding noon prayers. ISIS has claimed responsibility for this horrific attack.

Saudis on high alert after bomb explosion

Reuters, 6 August 2015
A suicide bomb attack on in a mosque in Abha city in south west Saudi Arabia killed 17 people on Thursday, Saudi state television channel al-Ekhbariya reported.
The mosque served a state security unit called the Special Emergency Force, and all those killed were members, the channel said.