The Vatican has declared the traditionalist Society of St. Pius X (SSPX) to be in schism and excommunicated its bishops and priests, responding aggressively to the consecration of four new bishops without papal consent. The Holy See warned that faithful adhering to the society also face sanctions.

In a decree, the Vatican’s doctrine office stated the consecrations, which took place at the society’s seminary in Econe, Switzerland, constituted a “schismatic act.” The SSPX, which opposes the modernizing reforms of the Second Vatican Council and celebrates the Latin Mass, was declared to have created a rupture with the Catholic Church.

The sanctions extend to SSPX priests, who are declared schismatic and excommunicated, with their administration of sacraments like confession and marriage invalidated. The Vatican also warned faithful attending SSPX Masses that formal adherence to the society places them under excommunication.

These measures are notably harsh, reversing concessions granted in recent years as the Vatican sought to bring the group back under Rome's authority. The SSPX, founded in 1970 by Archbishop Marcel Lefebvre in opposition to the reforms of the Second Vatican Council, has historically maintained a stance against what it views as errors and liberalism within the church.

The group has grown significantly since its initial break from Rome, now reporting six bishops, 751 priests, 264 seminarians, and numerous religious brothers, sisters, and oblates representing 50 nationalities. The SSPX has justified its actions, including the recent consecrations, by citing a "state of necessity" to minister to its followers and accused the church of straying from the true faith.

Archbishop Lefebvre himself consecrated four bishops without papal consent in 1988, an act that led to his and the bishops' excommunication and a declaration of schism by the Vatican. While Pope Benedict XVI lifted those excommunications in 2009 as part of an outreach effort, the SSPX has remained without legal standing in the church. The current decree reasserts the Vatican’s stance against the society's actions.

The aggressive response from the Vatican comes amid Pope Leo XIV's emphasis on church unity and outreach to conservative and traditionalist factions. However, the Vatican's actions suggest a conclusion to decades of attempts to negotiate with the SSPX, indicating that the Holy See has taken a firm stance against the society's continued defiance.