IOWA CITY, Iowa (AP) — University of Iowa President Sally Mason is apologizing for the school’s failure to protect athletes and employees in its handling of a former athletics department official accused of sexual harassment.

Mason said in a statement Friday that the university will make changes to avoid a repeat of what she called an “isolated breakdown” in the case of Peter Gray, who resigned last week after working as associate director of athletics student services since 2002.

The Iowa City Press-Citizen published an internal report that accused Gray of violating the school’s sexual harassment policy through improper touching that included shoulder massages, hugging and rubbing. The report says the behavior dated back to Gray’s earlier employment at Iowa in the 1990s and continued despite complaints from colleagues, coaches and at least one athlete.