RALEIGH, N.C. (WHAS11) – A federal grand jury met Tuesday as part of a criminal investigation stemming from the Duke Energy coal ash spill.
70 miles of the Dan River were coated with toxic sludge.
Prosecutors have issued at least 23 grand jury subpoenas to Duke Energy executives, North Carolina’s Department of Environment and Natural Resources and the State Utilities Commission.
Environmental groups are putting more pressure on regulators to force Duke Energy to clean up the ash pits polluting the waterways.
The spill into the Dan River happened in February.
Duke Energy also has customers in other states including Indiana and Kentucky.