NEW YORK (Reuters) -Oil prices ended higher on Friday, boosted by signals from Saudi Arabia that OPEC could cut output, but trading was volatile as investors digested and ultimately shrugged off warnings from the head of the U.S. Federal Reserve about economic pain ahead.

LONDON (Reuters) -Oil prices fell on Friday as talk of a hefty European Central Bank rate hike stoked demand worries and ahead of a speech from the U.S. Federal Reserve chairman.

NEW YORK (Reuters) -Oil prices edged lower in see-saw trading on Friday, as investors digested warnings from the head of the U.S. Federal Reserve that there is no quick cure for inflation.

BEIJING/SHANGHAI (Reuters) -China's Bank of Communications (BoCom) on Friday warned of liquidity risks in the property sector after it posted an almost 5% rise in first half net profit. "Asset quality control in the second half of the year still faces fairly large challenges and pressures, such as the liquidity problems seen in the real estate industry," said Chief Risk Officer Lin Hua in a press conference, adding that risk could spread to other industries. Lin also expects the quality o

NEW YORK (Reuters) -Oil prices fell on Friday, after the head of the U.S. Federal Reserve warned there is no quick cure for inflation, while talk of a hefty European Central Bank rate hike also stoked demand worries.

LONDON (Reuters) -Oil prices rose as much as $1 on Friday on signs of improving fuel demand, though an upcoming speech from the U.S. Federal Reserve chairman capped further gains.