ROME (AP) — The Vatican appeals tribunal declared a mistrial Tuesday in the Holy See’s big “trial of the century,” a stunning blow to both Pope Francis’ legacy and Vatican prosecutors who had put a cardinal and several other people on trial over alleged financial crimes.

In a 16-page ruling, the appeals court ruled that Francis and Vatican prosecutors both made procedural errors that nullified the original indictment and required a new trial. The court set a June 22 as the date for the new trial to begin.

The ruling was a win for the defense and a huge setback to Vatican prosecutors, who have been scrambling to salvage their case. The prosecution and 2023 convictions against Cardinal Angelo Becciu and others had been held up by the late pope as evidence of his willingness to crack down on financial misconduct in the Holy See.

The case had as its main focus the Vatican’s investment of 350 million euros ($413 million) in a London property. Prosecutors alleged brokers and Vatican monsignors fleeced the Holy See of tens of millions of euros in fees and commissions to acquire the property, and then extorted the Holy See for 15 million euros ($16.5 million) to cede control of it.

The original investigation spawned two main tangents involving Becciu, once a leading Vatican cardinal and future papal contender. He was convicted of embezzlement and sentenced to 5½ years in prison. The tribunal convicted eight other defendants of embezzlement, abuse of office, fraud and other charges.

They all maintained their innocence and appealed.

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