Judge Giuseppe Dalla Torre read the verdict aloud two hours after the three-judge Vatican panel began deliberating Paolo Gabriele's fate. Gabriele stood impassively as it was read out in the tiny wood-paneled tribunal tucked behind St. Peter's Basilica.
The sentence was reduced in half to 18 months from three years because of a series of mitigating circumstances, including that Gabriele had no previous record, had acknowledged that he had betrayed the pope and was convinced, "albeit erroneously" that he was doing the right thing, Dalla Torre said.
For now, he is serving his sentence under house arrest.
Gabriele was accused of stealing the pope's private correspondence and passing it on to journalist Gianluigi Nuzzi, whose book revealed the intrigue, petty infighting and allegations of corruption and homosexual liaisons that plague the leadership of the Roman Catholic Church.
He has said he leaked the documents because he felt the pope wasn't being informed of the "evil and corruption" in the Vatican, and that exposing the problems publicly would put the church back on the right track.
In his final appeal to the court Saturday morning, Gabriele insisted he was no thief.
"The thing I feel strongly in me is the conviction that I acted out of exclusive love, I would say visceral love, for the church of Christ and its visible head," Gabriele told the court in a steady voice. "I do not feel like a thief."
Gabriele's attorney, Cristiana Arru, said the sentence was "good, balanced" and said she was awaiting the judges' written reasoning before deciding whether to appeal.
Nuzzi's book, "His Holiness: Pope Benedict XVI's Secret Papers" convulsed the Vatican for months and prompted an unprecedented response, with the pope naming a commission of cardinals to investigate the origin of the leaks alongside Vatican magistrates.
Arru said Gabriele would return to his Vatican City apartment to begin serving his sentence. He has been held on house arrest there since July after spending his first two months in a Vatican detention room.
Gabriele was also ordered to pay court costs.
Vatican spokesman the Rev. Federico Lombardi said the possibility of a papal pardon was "concrete, likely" and that the pope would now study the court file and decide. He said there was no way to know when a papal pardon might be announced.
In something of a novelty in jurisprudence, the pope was both victim and supreme judge in this case. As an absolute monarch of the tiny Vatican City state, Benedict wields full executive, legislative and judicial power. He delegates that power, though, and Lombardi said the trial showed the complete independence of the Vatican judiciary.
In reading the sentence, however, in a courtroom decorated with a photograph of Benedict on the wall opposite Gabriele, Dalla Torre began: "In the name of His Holiness Benedict XVI, gloriously reigning, the tribunal invoking the Holy Trinity pronounces the following sentence..."
In her closing arguments, Arru insisted that only photocopies, not original documents, were taken from the Apostolic Palace, disputing testimony from the pope's secretary who said he saw original letters in the evidence seized from Gabriele's home.
She admitted Gabriele's gesture was "condemnable" but said it was a misappropriation of documents, not theft, and that as a result Gabriele should serve no time for the lesser crime.
With the trial over, several questions still remain about the leaks, most importantly whether Gabriele acted alone.
In his testimony this week, Gabriele insisted "in the most absolute way" that he had no accomplices.
But in earlier statements to prosecutors, he named a half-dozen people including cardinals and monsignors with whom he spoke and said he received "suggestions" from the general environment in which he lived. He even identified one layman as the source of a segment of Nuzzi's book detailing some conflicts of interest of some Vatican police officers.
But in his closing arguments, prosecutor Nicola Picardi said the investigation turned up no proof of any complicity in Gabriele's plot. "Suggestions aren't proof of the presence of accomplices," he said.
There is another suspect in the case: Claudio Sciarpelletti, a 48-year-old computer expert in the Vatican secretariat of state who is charged with aiding and abetting the crime. Police say they found an envelope in his desk that said "Personal P. Gabriele" on it, with documentation inside.
Sciarpelletti has said Gabriele gave him the envelope, and later, that someone identified in court documents as "W" gave it to him to pass onto Gabriele.
Sciarpelletti's lawyer successfully got his case separated out at the start of Gabriele's trial. But attorney Gianluca Benedetti has said his client was innocent and that, regardless, there were no "reserved documents" in the envelope.