McCusker is a Benedictine monk at St. Louis Abbey, which neighbors St. Louis Priory, according to his author bio for a Roman Catholic magazine.

He taught theology at Priory, an all-boys Benedictine Catholic school that aims to send students to the country’s most selective colleges. The school enrolls about 400 students in grades 7-12 at an annual tuition of $24,125.

Abbot Gregory Mohrman, of St. Louis Abbey, wrote to the school community Sunday to announce the arrest.

“We are in communication and cooperation with law enforcement and continue to gather facts,” he wrote. “While we seek more information, our thoughts and prayers go immediately to the faculty member and family who have been impacted.”

Mohrman added that McCusker would immediately be removed from his roles in the school and would no longer live on campus.