The former owner of pain clinics in Georgetown and Dry Ridge, who was previously indicted on drug and money-laundering charges, has pleaded not guilty to additional federal charges, the U.S. Attorney's office said Wednesday.

The additional charges against Ernest William Singleton, 44, include 11 new money laundering-related offenses. He also faces an additional drug-conspiracy charge and three counts of distributing and dispensing controlled substances.

Singleton is accused of conspiring to distribute Diazepam, which is used to treat muscle spasms and anxiety, and the pain reliever Ultram outside the scope of professional practice and not for a legitimate medical purpose, according to court documents.

Prosecutors say Singleton bought property, including a home and farm equipment, with money he obtained from drug trafficking, according to a news release.

Singleton was previously indicted on charges that he distributed oxycodone and conspired to launder money, the release said.

A trial date has been scheduled for June 3.

Valarie Honeycutt Spears: (859) 231-3409. Twitter: @vhspears.