Crude oil prices have continued to rise.
West Texas Intermediate for April delivery, which expires Friday, gained by US$1.43 to US$26.65 a barrel on the New York Mercantile Exchange, trimming a fourth weekly loss. The more-active May contract added 2.2 percent at US$26.47 as of 1:30 p.m. in Singapore.
Brent crude for May increased 27 US cents, or 1 percent, to US$28.74 a barrel on the ICE Futures Europe exchange after climbing by 14 percent on Thursday. The global benchmark was at a premium of US$2.47 to WTI for the same month.