Vatican excommunicates breakaway Catholic bishops who defied Pope Leo XIV

Pope Leo XIV's first major showdown with a breakaway Catholic movement ended Thursday with the Vatican declaring the Society of St. Pius X in schism and excommunicating bishops who defied the pontiff by ordaining new bishops without his approval.

The Vatican acted one day after the Society of St. Pius X (SSPX) consecrated four new bishops at its seminary in Écône, Switzerland, despite a personal appeal from Leo urging the group to abandon what the Catholic Church called a "schismatic act."

In a decree released Thursday, the Holy See excommunicated the four newly consecrated bishops as well as the two bishops who took part in the ceremony, declaring the ordinations a schism, or an intentional break from the Catholic Church.

The decision comes after decades of efforts by successive popes to reconcile with the traditionalist movement, which rejects many of the reforms adopted during the Second Vatican Council in the 1960s, including allowing Mass to be celebrated in local languages instead of Latin.

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Only the pope has the authority to approve the consecration of Catholic bishops, a practice meant to preserve the Church's unity and its line of succession from the apostles.

The sanctions also reverse concessions the Vatican had granted the SSPX in recent years as it tried to bring the group back into full communion with Rome. According to the decree, the group can no longer validly administer the sacraments of confession and marriage, and the Vatican urged Catholics attending SSPX Masses to separate themselves from the movement.

The action comes just days after Leo made a rare personal appeal to the group's leader, the Rev. Davide Pagliarani, urging him to cancel the consecrations.

"I plead with you and ask you with all my heart: please turn back!" the pope wrote in a letter to Pagliarani on Monday, warning the planned ordinations would deepen the decades-old division between Rome and the SSPX.

The dispute is the first major test of Leo's pontificate. Since becoming pope, the American-born pontiff has emphasized healing divisions within the Catholic Church, including reaching out to conservatives and traditionalists who felt alienated during Pope Francis' papacy.

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During Wednesday's consecration ceremony, Pagliarani insisted the ordinations were carried out not in opposition to the pope but in service to the Church.

"We are accused of not respecting the pope," Pagliarani said. "But it is precisely because we love the pope as the vicar of Christ, as the head of the church, that we don’t want to see the pope humiliated anymore, on the side of false shepherds representing false religions."

Founded in 1970 by French Archbishop Marcel Lefebvre, the Society of St. Pius X has long opposed what it considers theological errors introduced by the Second Vatican Council. Lefebvre was excommunicated in 1988 after consecrating four bishops without the approval of Pope John Paul II in a nearly identical confrontation.

Those excommunications were lifted in 2009 by Pope Benedict XVI in an effort to restore dialogue, though the SSPX never returned to full communion with Rome and has remained outside the Church's formal structure.

Despite that status, the society has continued to grow, reporting hundreds of priests, seminarians and religious members serving followers in dozens of countries, making it one of the largest traditionalist Catholic movements operating outside the Vatican's authority.

The Associated Press contributed to this report.