The price of oil fell to around $106 a barrel Tuesday after weak U.S. home sales figures and ahead of a weekly report on America's inventories of crude that was expected to show another drop in supplies.
By early afternoon in Europe, benchmark crude for September delivery was down 96 cents at $105.98 a barrel in electronic trading on the New York Mercantile Exchange.
Oil slid $1.14 on Monday after the government said sales of previously occupied homes in the U.S. slipped 1.2 percent in June to a seasonally adjusted annual rate of 5.08 million. Any sign that the U.S. economic recovery is slowing can cause the oil price to fall.
Analysts said speculative trading was also likely behind the sudden turnaround in the oil price.
"Profit-taking by short-term-oriented financial investors is doubtless to blame for the sharp fall," said a report from Commerzbank in Frankfurt. "The fact that the WTI price twice failed to achieve the $109 per barrel mark is likely to have prompted initial investors to unwind their positions. That said, it is possible that these same investors will re-enter at lower prices."