Oil prices ease on unexpected rise in US inventories

Oil prices edged lower on Thursday as a surprise increase in U.S. crude and fuel inventories stoked concerns over weakening demand. Caution also prevailed among investors amid renewed nuclear talks between the U.S. and Iran.

Brent crude slipped 33 cents, or 0.5%, to $64.58 a barrel, while U.S. West Texas Intermediate fell 32 cents to $61.25. Both benchmarks had dropped 0.7% in the previous session.