LOS ANGELES — Southern California athletic director Lynn Swann has resigned after three years on the job at his alma mater.

USC President Carol Folt announced the decision in a letter Monday.

Dave Roberts will serve as interim athletic director. He is a special adviser to Folt, who assumed her position in July.

The 67-year-old Swann was hired in 2016 despite no significant experience in athletic administration. The Pro Football Hall of Fame receiver spent nine years with the Pittsburgh Steelers.

USC’s athletic department has faced several setbacks during Swann’s stay, notably involvement in the widespread college admissions scandal and the college basketball corruption scandal.

Swann also soured many USC fans by backing football coach Clay Helton, who was retained after the Trojans went 5-7 last season.