The victims were military.
In the city of Medina in the West of Saudi Arabia a suicide bomber detonated an explosive near a mosque.
The explosion occurred near the Mosque of the prophet, which is the second holiest site in Islam.
The explosion killed two employees of the security service, and also the suicide bomber.
As reports Al Jazeera, citing local residents, on Monday evening also two explosions occurred in the city of Qatif in the East of the Kingdom. According to eyewitnesses, a suicide bomber blew himself up near a Shiite mosque. Information about the victims in the incident no.
