RALEIGH, NC (AP) -- Federal authorities have launched a criminal investigation into North Carolina's environmental agency following a massive coal ash spill on the Dan River.
The U.S. Attorney's Office in Raleigh issued a grand jury subpoena demanding records from the North Carolina Department of Environment and Natural Resources. They include emails, memos and reports from 2010 through the Feb. 2 spill.
The Associated Press obtained a copy of the subpoena on Thursday.
The spill at a Duke Energy plant in Eden spewed enough toxic sludge into the river to fill 73 Olympic-sized pools. It was the third-largest coal ash spill in US history.
Prosecutors ordered the state environmental agency's chief lawyer to appear next month before a grand jury. Agency spokesman Drew Elliot says the state will cooperate with the federal investigators.
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