TOPEKA (KSNT) – A man was sentenced Monday to 84 months in federal prison for committing an armed robbery at a Topeka restaurant, U.S. Attorney Barry Grissom said. 24 year-old Derick Renee Crawford of Topeka pleaded guilty to one count of robbery, one count of brandishing a firearm during the robbery and one count of unlawful possession of a firearm following a felony conviction. In his plea, he admitted he and co-defendant Travis Jeremy Coffman committed an armed robbery Aug. 18, 2013, at the Red Robin restaurant at 6230 S.W. 6th in Topeka. Armed with a can of mace, Coffman ordered an employee inside the restaurant and forced her to retrieve money from the safe. Crawford remained outside holding the remaining employees as gunpoint. Crawford told the employees that he would kill anyone who called the police. Coffman is set for sentencing November 3rd.