A 26-year-old Columbus, Ohio man has pleaded guilty to selling drugs through the Silk Road website.

David Lawrence Handel apparently obtained methylone and other drugs from a supplier in China, which he then sold to buyers on the online black market. Among those buyers were Maryland federal agents, who were making undercover purchases. Handel shipped the drugs to them through the US Postal Service, according to the United States Attorney’s Office for the District of Maryland.

Handel was arrested in August 2012 after agents caught him picking up a package of drugs at a post office. He had a firearm on his ankle and another in his car.

He was just one of several dealers that the authorities were carefully watching before the Silk Road site was shut down in 2013. In a similar case in October 2013, two people were arrested on charges related to selling heroin, cocaine, and other drugs.

Handel’s guilty plea was announced the same week that a jury convicted Ross Ulbricht of seven charges related to being the operator of the Silk Road. Ulbricht faces life in prison.

Handel faces up to 20 years in prison for drug trafficking and up to life for using and possessing a firearm. His sentencing is scheduled for May 15.