A Douglas County judge Tuesday morning sentenced a 21-year-old Topeka man to serve a 32-month prison sentence for his role in robbing a Kansas University student who had planned to sell him and a co-defendant marijuana in 2009, attorneys said.

District Judge Kay Huff also ordered Terrance A. Dean to register as a violent offender for 15 years after he’s released from prison because the crime was committed with a firearm. Dean had entered a plea in January to conspiracy to commit robbery.

Prosecutors accused Dean and another Topeka man, Mykel Dantae Karlyle, 21, of using handguns to rob a student of marijuana on April 29, 2009, in the parking lot outside McCollum Hall. Prosecutors have said the victim believed he was going to sell marijuana to the men when he was robbed.

Huff two weeks ago sentenced Karlyle to serve a five-year prison sentence after he pleaded no contest to one count of aggravated robbery. Karlyle also faces aggravated robbery and aggravated battery charges for a 2011 incident in Shawnee County.

Dean also faces federal charges after he was indicted last year and accused on Sept. 19, 2011, of possession with intent to distribute marijuana, carrying a shotgun in relation to a drug trafficking crime and possessing the gun while he faced robbery charges in the Douglas County case.

Eve Kemple, an assistant Douglas County district attorney, said Dean faces substantial prison time in the federal case.