<p>Muslim worshippers are silhouetted against the sunrise during the Hajj pilgrimage on Mount Arafat, near Mecca, Saudi Arabia, Mast Irham / EPA</p>
<p>Muslim worshippers are silhouetted against the sunrise during the Hajj pilgrimage on Mount Arafat, near Mecca, Saudi Arabia, Mast Irham / EPA</p>
Saudi Arabia threatens ban on Nigerian Hajj pilgrims
Deadly Lassa fever has Saudi officials fearful of potential Hajj outbreak
