How 30 masked ISIS jihadis used burnt-out cars to trap Egyptian worshippers outside a mosque before killing 305 - including 27 children

Dozens of suspected ISIS terrorists created an arena of death around the holy house by blocking off escape routes with burnt-out cars before gunning down the penned-in worshippers. Pictured: Victims in the mosque

The terrorists who slaughtered 305 people at a mosque in Egypt yesterday were carrying an ISIS flag and wearing masks, it has been revealed.

Around thirty gunmen created an arena of death around the holy house by blocking off escape routes with burnt-out cars before gunning down the penned-in worshippers in a 20-minute massacre.

The public prosecutor's office said today the gunmen, wearing masks and military-style uniforms, surrounded blocked windows and a doorway before setting off a bomb and opening fire with automatic rifles.

'They numbered between 25 and 30, carrying the Daesh flag and took up positions in front of the mosque door and its 12 windows with automatic rifles,' the statement explained, using an Arabic term for ISIS.

In the meticulously planned attack - the worst Islamist atrocity in Egypt's modern history - the murderers reportedly gunned down civilians while screaming 'Allahu Akbar', causing them to stampede and jump out of windows to escape.

But when the worshippers - many of whom were Sufis, a mystical Islamic sect despised by Sunni jihadists - fled, they were caught in the trap and massacred.