Some 99% of South Sudanese voted to secede from the north, according to the first complete results of the region's independence referendum.
A total of 99.57 percent of those polled voted for independence, according to the referendum commission.
Sudan exports billions of dollars of oil per year. Southern states produce more than 80% of it, but receive only 50% of the revenue, exacerbating tensions with the north. The oil-rich border region of Abyei is to hold a separate vote on whether to join the north or the south.