Via BBC: 

A suicide bombing has been reported outside the Prophet's Mosque – one of Islam's holiest sites – in Saudi Arabia's city of Medina.

Social media footage showed a blazing vehicle and billowing smoke.

The Prophet's Mosque is the burial place of the Prophet Muhammad and Medina the second-holiest city in Islam after Mecca.

Earlier, at least one explosion rocked the eastern city of Qatif, where many minority Shia Muslims live.

A suspected suicide bomber also died after detonating a device near the US consulate in the city of Jeddah.

Update:

Via Fox News:

At least four security officers were killed and five injured in a suicide bombing Monday outside an Islamic holy site in Medina, according to the Saudi Interior Ministry.

The Monday evening attack took place just as thousands of worshippers were about to hold sunset prayers in the mosque where the Prophet Muhammad is buried in Medina. 

The mosque is visited by millions of Muslims from around the world annually performing pilgrimage in Mecca.

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