The first swine flu deaths have been reported on the Hajj as millions of pilgrims descend on Mecca.
And as the traditional Muslim pilgrimage gets under way, there are now fears that thousands could be at risk from the killer virus.
According to the Saudi Arabian Health Ministry, one teenager and three old people died of swine flu.
A 17-year-old girl from Nigeria was among the victims along with men from Sudan, India and Morocco, all over 75.
The teenager had a pre-existing chronic illness.