According to Business Insider, oil prices are down due to increased inventories at a delivery hub in the United States.
West Texas Intermediate was down about six-tenths of a percent on August 13th, trading at $67.34 per barrel.
The international benchmark, Brent crude, was also down about three-tenths of a percent, trading at $72.74 per barrel.
Data from a market research firm showed that inventories at the Cushing delivery hub in Oklahoma rose by 1.7 million barrels last week.