ATLANTA (AP) — A former prison doctor who has pleaded guilty to sexually assaulting inmates who came to him for treatment at the federal penitentiary in Atlanta is set to be sentenced.

Dr. Lewis Jackson is scheduled to appear before a federal judge for sentencing Thursday. Jackson pleaded guilty in November to three counts of sexually abusing male inmates who were under his supervision in October 2011. Under a plea agreement, prosecutors agreed to drop a charge of lying to federal agents that had also been included in an indictment filed in August.

Jackson last month pleaded guilty to similar charges in Washington D.C., where prosecutors say he sexually assaulted an inmate at the D.C. jail in November 2008. He’s set to be sentenced there later this year.

(© Copyright 2013 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)