Oil prices eased after rallying for the ninth consecutive day.
Benchmark U.S. crude dropped 18 US cents to US$52.41 per barrel in electronic trading on the New York Mercantile Exchange. The contract has surged by 23.7 percent since December 24. It added another 23 US cents to US$52.59 per barrel on Thursday.
Brent crude, used to price international oils, shed up 29 US cents to US$61.39 per barrel. It gained 24 US cents to US$61.68 per barrel in London.