Seton Hall University is reminding students to be civil to future Catholic priests.

Seminarians at New Jersey's largest Catholic university have been the target of expletives and insults as a result of recent priest sex abuse scandals.

In a letter to the campus community, interim President Mary Meehan wrote it is "unacceptable and cannot be tolerated."

Meehan wrote she was "saddened" to have to remind the campus to be welcoming. She said the school expects "nothing less than civility."

The South Orange campus includes Immaculate Conception Seminary.

Seton Hall in August hired a law firm to investigate sexual abuse allegations that may involve some of its seminarians.

The U.S. Justice Department announced Thursday that it has opened an investigation of child sexual abuse inside the Roman Catholic Church in Pennsylvania. Subpoenas demanding confidential files and testimony from church leaders were served last week.

A Pennsylvania grand jury report over the summer found that 301 "predator priests" in the state had molested more than 1,000 children over 70 years.