US oil prices eased off five-month highs on Thursday, falling below $60 a barrel amid concerns about growing Iranian oil supplies should sanctions on Tehran be lifted next month.
West Texas Intermediate (WTI) for June delivery fell 3.3 percent or $2.09 to $58.84 a barrel Thursday afternoon. The US benchmark had climbed above $62.50 a barrel earlier in the week, its highest level since December.
WTI is still poised for its ninth consecutive weekly gain.
Meanwhile, Brent crude eased off 2015 highs, falling 3.3 percent or $2.26 to $65.61 a barrel.