Oil prices drop amid demand worries

NEW YORK, July 21 (Xinhua) -- Oil prices fell on Thursday as demand concerns predominated.

The West Texas Intermediate for September delivery lost 3.53 U.S. dollars, or 3.5 percent, to settle at 96.35 dollars a barrel on the New York Mercantile Exchange. Brent crude for September delivery decreased 3.06 dollars, or 2.9 percent, to close at 103.86 dollars a barrel on the London ICE Futures Exchange.