U.S. District Judge Legrome D. Davis of the Eastern District of Pennsylvania, most recently known for presiding over Philadelphia’s Amtrak multidistrict litigation, is taking senior status, the clerk of courts announced Thursday.

Davis, who has been on the federal bench for roughly 15 years, was a judge in the Criminal Division of the Philadelphia Court of Common Pleas from 1987 to 2002. Before becoming a judge, Davis was a prosecutor in the Philadelphia District Attorney’s Office.