The price of oil on world markets continued to fall Wednesday, reaching levels not seen in months.

In New York, the price for the West Texas Intermediate crude drilled from U.S. oil rigs dipped to as low as $91.81 a barrel — the lowest point since last November — before edging higher again. In London, Brent oil drilled in the North Sea fell to $111.63, near its four-month low.

Analysts said political uncertainty in Greece and questions over whether it could become the first country to leave the 17-nation euro currency union helped push down the price of crude — on the theory that economic turmoil would weaken the demand for oil.

In addition, the U.S. price fell as the government reported that the country's oil supplies increased last week by more than 2 million barrels. The U.S. oil reserves are now at a 22-year high, and prices usually fall when oil is more plentiful.