A suicide bomber has killed 4 security officers and injured 5 others near one of Islam's holiest sites in the Saudi city of Medina.
The bomber detonated his explosives after being stopped outside the Prophet's Mosque.
The mosque is the burial place of the Prophet Muhammad and Medina the second-holiest city in Islam after Mecca.
Blasts also struck two other Saudi cities yesterday. Suspicion is likely to fall on so-called Islamic State.