PARIS — Germany’s Roman Catholic bishops on Wednesday canceled a study into the sexual abuse of minors by priests, prompting the investigator to accuse them of trying to censor what was to be a major report on the scandals.

The independent study, examining church files that sometimes date to 1945, was meant to shed light on undiscovered cases after about 600 people filed claims against priests in 2010 following a wave of revelations of sexual abuse. The German scandals were part of a series of abuse scandals that also shook the Catholic Church in Ireland, Belgium, the Netherlands and the United States, forcing Pope Benedict XVI to issue a public apology.

Bishop Stephan Ackermann, a spokesman on abuse issues for the German Bishops’ Conference, said that the hierarchy had lost confidence in the researcher, Christian Pfeiffer, a criminologist, and that it would look for another specialist for the study.

“We will have to find a new partner,” Bishop Ackermann said in a statement that blamed Mr. Pfeiffer’s “communications behavior with church officials” for the breakdown.