The N.C. Department of Environment and Natural Resources is the target of a federal criminal investigation following Duke Energy’s coal ash spill into the Dan River on February 2. The U.S. Attorney’s office issued a grand jury subpoena requesting records from DENR related to coal ash discharges from the Dan River Power Plant including emails, memos and reports from 2010 to the present. Duke Energy confirmed to WRAL that it also received a subpoena, but the company is not required to disclose the contents of the subpoena.