Saudi Arabia's civil defense says that at least 150 pilgrims have died while 400 others were injured when a stampede broke out in the tent city of Mina, reported Al Arabiya News. Rescue operations are currently under way, the service said on Twitter, after the stampede in Mina near Mecca, where hundreds of thousands of pilgrims were taking part in the 'stoning of the devil', last major rite of the Hajj pilgrimage.