ROANOKE, Va. (AP) _ A Franklin County man who forced a woman to engage in prostitution has pleaded guilty to human trafficking. Tremayne Rontae Kirby entered the plea Tuesday in federal court in Roanoke. Kirby also pleaded guilty to one count of using interstate commerce to promote an enterprise involving prostitution. Prosecutors said Kirby admitted to operating a prostitution enterprise involving women in Virginia, North Carolina and New Jersey. Kirby used the money generated from the prostitution enterprise to pay for hotels, buy illegal drugs and food. Prosecutors said he hit, body-slammed, shook, and threatened one woman to get her to engage in prostitution. At sentencing, Kirby faces a minimum penalty of 15 years in prison and a maximum penalty of life in prison, and a fine of up to $250,000.