A 32-year-old Lawrence man has been sentenced to 10 years in federal prison for convictions related to drug trafficking and money laundering.

Darren D. Wilburn in 2005 had pleaded guilty to conspiracy to distribute or possess with intent to distribute more than 50 grams of cocaine base and conspiracy to commit money laundering. U.S. District Judge Kathryn Vratil decided to run the sentences at the same time.

According to court documents, Wilburn ran a drug trafficking operation in Lawrence from 2001 to 2005. U.S. Attorney Eric Melgren said other people helped Wilburn distribute marijuana and crack cocaine while he handled cash and used it to buy vehicles not registered in his name.

Investigators with the Douglas County Drug Enforcement Unit, made up of sheriff’s officers and police, used informants to make controlled purchases of crack cocaine from Wilburn and others involved.

Lamar Johnson and Evann Hardy have also been convicted in the case.

Erin Harmon had pleaded guilty in 2006 for having knowledge of money laundering but failing to report it. According to court documents, Harmon admitted in her plea that Wilburn, her boyfriend, regularly gave her cash to pay for child support, court costs in criminal cases and vehicle rentals. In 2006, she was sentenced to two years’ probation.