In a news release Monday, Lt. Jeffrey J. White of the Hart post said Brian Alan Brockette had a medical emergency late Sunday and died. The 20-year-old from Caledonia was working as a volunteer for an outside vendor at the festival.
White said autopsy results on Brockette are pending, and no additional information is available.
The four-day, sold-out Electric Forest festival wrapped up Sunday.
The fourth annual event was held at the Double JJ Resort near the village of Rothbury. The site had been home to the Rothbury festival, which started in 2008 and was called off in 2010.