U.S. Attorney Chris Thyer, left, speaks during a news conference at Arkansas Department of Environmental Quality headquarters in North Little Rock, Ark., as Arkansas Attorney General Dustin McDaniel

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U.S. Attorney Chris Thyer, left, speaks during a news conference at Arkansas Department of Environmental Quality headquarters in North Little Rock, Ark., as Arkansas Attorney General Dustin McDaniel listens Thursday, June13, 2013. The two prosecutors announced they are seeking civil penalties from ExxonMobil Pipeline Co. over the company's oil spill in a central Arkansas neighborhood. (AP Photo/Danny Johnston) less 

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Associated Press
Fri, Jun 14, 2013 1:26 AM EDT