Oil prices tumble on profit-taking

Oil prices ended sharply lower Thursday, as investors became cautious after recent solid gains.

The West Texas Intermediate for November delivery dropped 1.17 U.S. dollars to settle at 50.43 dollars a barrel on the New York Mercantile Exchange, while Brent crude for December delivery decreased 1.29 dollars to close at 51.38 dollars a barrel on the London ICE Futures Exchange. Enditem