Oil prices ease as weak demand outlook weighs on market

SINGAPORE (Reuters) - Oil prices slipped on Thursday amid persistent concerns about a weak demand outlook, after posting sharp gains in the previous session following a surprise crude inventory drawdown in the United States.Brent crude futures fell 17 cents, or 0.3%, to $61 a barrel by 0620 GMT. The international benchmark crude rose 2.5% on Wednesday to settle at $61.17 a barrel, levels not seen since Sept. 30. West Texas Intermediate (WTI) crude futures dropped 32 cents, or 0.6%, to $55.65..