Although the work allowed for "a better understanding," the commission said that aspects of the cardinal's life "are still subject to various interpretations."

"In the case of Cardinal Stepinac, the prevalent interpretations given by Catholic Croats and Orthodox Serbs remain divergent," said a message written by the commission and released by the Vatican July 13.

While Cardinal Stepinac remains a national hero for Croats, he is still considered a highly controversial figure for Serbian Orthodox and some Jewish groups, who have accused him of being a Nazi sympathizer.

The commission, which held its sixth and final meeting July 12-13, is made up of representatives of the Serbian Orthodox Church, the Catholic Church in Croatia and the Vatican. It was created at the request of Pope Francis.

Before World War II, Blessed Stepinac was noted for helping Jewish refugees from Nazi Germany. Though he welcomed the independent, pro-Nazi Croatian state declared in 1941, he later protested the puppet regime's genocidal policies and atrocities committed against Serbs, Jews and Gypsies.

But when communist partisans came to power in 1945, they accused the cardinal of attacking communism, and he was convicted of collaborating with the Nazis. He died under house arrest in 1960 from an illness he contracted in prison.

Blessed Stepinac was beatified as a martyr by St. John Paul II in 1998.

Croats see him as a symbol of the church's resistance to communist oppression, but others sharply criticize his early support of Croatia's pro-Nazi government.

Despite differences of opinion on Cardinal Stepinac's life, the commission members said they were aware that the final decision on his canonization is of "the exclusive competence of the pope" and that "each church has its own criteria to proceed with canonization."

However, they also agreed that the study helped to "illustrate the life and ministry of an important Catholic pastor during a particularly troubling period of history."

"The study of Cardinal Stepinac's life has taught that, throughout history, all churches cruelly suffered different persecutions and have their martyrs and confessors of the faith," the commission said.

"In this regard, the members of the commission agreed on the possibility of a future collaboration in a common work to share the memory of martyrs and confessors of both churches."