The Vatican's sex crimes prosecutor, Archbishop Charles Scicluna, met with Poland's Catholic bishops on Friday to share his experience in tracking crimes, after the Polish church admitted knowing about hundreds of cases over the years where priests abused minors.

Scicluna attended the bishops' plenary session Friday in Walbrzych, southwestern Poland, for a discussion about "protecting children and youths," the Episcopate said.

Bishop Piotr Libera tweeted that Scicluna's remarks were "extremely interesting."

FILE - In this Thursday, March 14, 2019 file photo, the head of Poland's Catholic Church Archbishop Wojciech Polak, right, addresses the media during a news conference in Warsaw, Poland. The Vatican's sex crimes prosecutor, Archbishop Charles Scicluna, is meeting Poland's Catholic bishops to share his experience in tracking crimes, after the Polish church admitted knowledge of hundreds of cases of abuse of minors by priests. Scicluna is attending the bishops' plenary session Friday, June 14 in Walbrzych, southwestern Poland, at the Episcopate's invitation. (AP PhotoCzarek Sokolowski, file)

FILE - In this Thursday, March 14, 2019 file photo, the head of Poland's Catholic Church Archbishop Wojciech Polak, right, addresses the media during a news conference in Warsaw, Poland. The Vatican's sex crimes prosecutor, Archbishop Charles Scicluna, is meeting Poland's Catholic bishops to share his experience in tracking crimes, after the Polish church admitted knowledge of hundreds of cases of abuse of minors by priests. Scicluna is attending the bishops' plenary session Friday, June 14 in Walbrzych, southwestern Poland, at the Episcopate's invitation. (AP PhotoCzarek Sokolowski, file)

Scicluna told Poland's Catholic news agency KAI that he would like to "encourage Poland's bishops to implement the very good guidance points that they themselves adopted" in 2013.

Scicluna, a Maltese archbishop, and expert in church law, has been instrumental in revealing facts about priestly sex abuse and cover-up by Chilean church leaders for Pope Francis.

In February at the Vatican, he gave a tutorial on preventing sex abuse to a summit of church leaders convened by Francis in reaction to the global sex abuse and cover-up crisis that has undermined credibility in the church.

Poland's bishops acknowledged in March they had almost 400 predator priests on record. In this predominantly Catholic nation, the church has been strongly criticized for covering up cases of abuse by priests, moving them to new parishes and failing to ban them from working with children.

Only a limited number of cases have been tried by civilian courts. In one case, the court found a clergyman guilty of abducting, detaining and abusing a 13-year-old girl more than 10 years ago and ruled that his order pay her 1 million zlotys ($265,000) in compensation.

An independent documentary in May revealed testimony from people who as children were raped or abused by Polish clergy. It led Poland's Primate Wojciech Polak to apologize to the victims, but some other bishops initially shrugged at the film.

Still, the abuse revelations do not seem to have significantly undermined the church's authority among many believers, who say abuse is a problem of individual priests or claim the church has been unfairly attacked by critics.