MANASSAS, Va. (AP) — A former library worker at a northern Virginia elementary school has pleaded guilty to 22 felony sex-abuse charges as part of a plea bargain.

Steffon Christian worked for nearly 20 years as a kindergarten assistant and then as a library secretary at Baldwin Elementary School in Manassas. On Monday, the 48-year-old admitted molesting at least seven boys. Victims said the abuse occurred at the school and at Christian’s home.