In explaining the decision to block the trial, Ratzinger's deputy at the Congregation for the Doctrine of the Faith noted that the alleged offenses had occurred outside the church's statute of limitations. The Congregation for the Doctrine of the Faith is the Vatican's doctrinal body that decides whether accused priests should be given full canonical trials and defrocked.
The second sexual abuse case the Pope had a role in is Reverend Peter Hullermann's case.
Reverend Hullermann was first removed from his Essen, Germany congregation in 1979 after multiple accusations of molesting young boys. The New York Times reports that then the future Pope approved sending Hullermann to therapy in 1980 to overcome his pedophilia. Next, Ratzinger was reportedly copied on a memo that informed him that Reverend Hullermann would be transferred to another parish just days after beginning that psychiatric treatment. Hullermann was later convicted of molesting more boys at another parish and removed from his duties.