After surging over 1% earlier in the day, crude oil prices fell on Tuesday while the U.S. continued talking with Iran about its nuclear development program. Investors remained wary whether the U.S. and Iran could end up by taking military action.
The slight drop in prices came a day after the U.S. warned U.S. flagged vessels in the Strait of Hormuz and Gulf of Oman to stay as far away from Iranian territory as possible.
Global benchmark Brent crude fell 0.4% to $68.77 a barrel.
West Texas Intermediate crude slipped 0.7% to settle at $63.94 a barrel on the New York Mercantile Exchange.
Natural gas prices slipped again on Tuesday. They closed at $3.130 MMBtu after a drop of 40.008 or 0.25%.
Tuesday was mostly a split day for Oklahoma energy stocks. Those with 5% losses included Empire Petroleum and Mammoth Energy Services while firms that recorded gains had 2% or less for the day.