Pope Francis decreed Tuesday that slain Salvadoran archbishop Oscar Romero was killed out of hatred for the faith, approving a martyrdom declaration that sets the stage for his beatification.

Francis, the first Latin American pope, approved the decree honoring one of the heroes of Latin American Catholics at a meeting with the head of the Vatican's saint-making office.

Romero, the archbishop of San Salvador, was gunned down by right-wing death squads in 1980 while celebrating Mass. He had spoken out against repression by the Salvadoran army at the beginning of the country's 1980-1992 civil war between the right-wing government and leftist rebels.

His sainthood cause had been held up by the Vatican for years out of concern at his perceived association with liberation theology, the Latin American-inspired Catholic theology advocating for the poor.

But Francis "unblocked" the cause soon after being elected.

No date for the beatification has been set. Francis has all but ruled out celebrating it himself, saying recently that it would be up to the head of the saint-making office, Cardinal Angelo Amato, and the prelate who for decades has spearheaded Romero's cause, Monsignor Vincenzo Paglia, to decide who would get the honor.

Paglia was to meet with reporters Wednesday to discuss the historic case.

Unlike regular candidates for beatification, martyrs can reach the first step to possible sainthood without a miracle attributed to their intercession. A miracle is needed for canonization, however.

Traditionally, the church has restricted the martyr designation to people who were killed out of hatred for the Catholic faith. One of the reasons Romero's case had lagged was over questions about whether he was killed for his politics in support of the poor or for his faith.

The decree signed Tuesday by Francis makes clear that Romero was a martyr in the classic sense, killed out of hatred for the faith.