John Barker, a Memphis-Shelby County Schools deputy superintendent who was on leave pending an investigation into a complaint against him, has retired from the district.Additionally, the official who made the complaint, district human resources chief Yolanda Martin, has resigned in the wake of an investigation of a separate complaint against her last month.

For the second time in six weeks, a Memphis-Shelby County Schools official has been placed on paid administrative leave pending an investigation into an employee complaint.The nature of the complaint against Yolanda Martin, the district’s chief of human resources, was not immediately clear Friday afternoon. The district declined to comment on the investigation, but interim Superintendent Toni Williams said in a statement that the district “investigates all employee complaints as we continue our ongoing efforts to emphasize integrity in all MSCS functions.”