At least 184 people have been killed in an attack on a mosque in the North Sinai province of Egypt.

A further 125 people have been reported injured. 

The casualties occurred in an explosion at an al-Rawda mosque in the town of Bir al-Abed. 

Deeply saddened by the abhorrent attack on a mosque in North Sinai, #Egypt. My sincere condolences to all those affected by such a barbaric act.

— Boris Johnson (@BorisJohnson) November 24, 2017

After the explosion went off, worshippers fled the building, only to be met by waiting gunmen who opening fire on the panicked crowds. 

Witnesses at the scene said that men in four off-road vehicles opened fire on worshipers during Friday prayers, according to AP.

It is not yet confirmed who was behind the attack. 

'They were shooting at people as they left the mosque,' a local told Reuters.

'They were shooting at the ambulances too.'

We will bring you more on this story as we have it.