Oil prices tumbled about 4 percent Thursday, dropping below $99 per barrel as anxiety over European debt spread from Italy to Spain.
Here's how energy prices traded.
On the New York Mercantile Exchange:
Crude fell $3.77, or 3.7 percent, to end the day at $98.82 per barrel.
Gasoline lost 12.02 cents, or 4.6 percent, to finish at $2.5071 per gallon.
Heating oil lost 5.14 cent to end at $3.0832 per gallon.
Natural gas rose 6.6 cents, or 2 percent, to finish at $3.41 per 1,000 cubic feet.
On the ICE Futures exchange in London:
Brent crude fell $3.42, or 3 percent, to end at $108.09 per barrel.