A vote in Greece on austerity measures later Wednesday, needed to be approved to access bailout funds, was also weighing on markets.
Brent crude, which is used to price international varieties of oil, was down $1.14 to $109.93 on the ICE Futures exchange in London.
Other energy futures rose in New York trading:
— Wholesale gasoline fell 3.11 cents to $2.6678 a gallon.
— Heating oil lost 2.36 cents to $3.0293 a gallon.
— Natural gas fell 2.9 cents $3.588 per 1,000 cubic feet.
Pamela Sampson in Bangkok and Sarah DiLorenzo in Brussels contributed to this report.