More than 30,000 customers remained without power early Monday in Moore County, North Carolina, and students will stay home because of gun attacks on power substations.
Local authorities and the FBI have launched a criminal investigation into the targeted attacks.
“The person, or persons, who did this knew exactly what they were doing,” Moore County Sheriff Ronnie Fields said Sunday at a news conference. “We don’t have a clue why Moore County.”
Sheriff Fields imposed a curfew that lasts from 9 p.m. until 5 a.m. It began late Sunday.
Duke Energy said the outage could last until Thursday for some residents, and there is a shelter for residents seeking refuge from the cold, according to WTVD ABC 11.