An Aiken man pleaded guilty last week to submitting false documents to the Department of Energy.

John Parkehurst Madden, a 54-year-old man from Milwaukee, Wis., entered a guilty plea on Oct. 3 in federal court in Columbia.

Madden pleaded guilty to using a false document, according to the U.S. Attorney's Office for the District of South Carolina. According to evidence presented at the hearing, Madden submitted an Application for Site Access Authorization Form to the Department of Energy in December 2011.

The form was to obtain a security badge, which would enable him to access the Savannah River Nuclear Site. The form included another person's Social Security number, U.S. Attorney Bill Nettles reported in a press release.

United States District Judge Margaret B. Seymour accepted the guilty plea and will deliver a sentence after reviewing the presentence report, which will be prepared by the U.S. Probation Office.

According to Nettles, the maximum penalty for using a false document is imprisonment for five years and/or a fine of $250,000.

Derrek Asberry is a beat reporter with the Aiken Standard news team and joined the paper in June. He is originally from Vidalia, Ga., and graduated from Georgia Southern University with a journalism degree in May 2012.