In other news
US consumer prices have recorded their biggest drop in nearly six years as fuel prices tumble, but the general view is that interest rates will increase.
Europe's main stock markets have surged following rallies in Tokyo and on Wall Street as dealers welcomed the outcome of the US Federal Reserve policy meeting.
US authorities have fined Avon $135m to settle a corruption probe in China after it became known the company had bribed officials.
Asian markets have rallied, with investors reversing a recent sell-off spurred by indications the Federal Reserve will keep rates on hold until mid-2015.
Saudi Arabia, the largest producer in the Opec oil cartel, cannot reduce its output despite plunging prices, a report says.
Nigeria's economy will grow 5.5% in 2015, down from an earlier projection of 6.4%, due to lower oil revenues, the budget the finance minister says.
Brent crude has jumped 2% to above $62 a barrel, as some traders bet a six-month price rout could be ending as more energy firms cut investment budgets.
Indian Prime Minister Narendra Modi has taken direct control of a project-monitoring body to fast-track investments worth almost $300bn.