The arrests were over the alleged targeted robbery of mobile phones to cover up alleged sexual abuse.
The theft was commissioned to remove allegedly compromising images and messages on the phones of the two adult victims of the alleged abuse by the two friars.
Only one of the friars, who is in service at a church in Afragola, is accused of organising the robbery, which was staged in April.
The other suspects are the people who allegedly actually did the robbery and intermediaries.
ANSA