A priest preparing Communion was fatally struck by a falling crucifix during a livestreamed Mass in Ecuador, turning a moment of worship into a frantic rush to save him.

Father Patricio Alfredo Sánchez Molinari was standing at the altar of Nuestra Señora del Perpetuo Socorro Church in Guayaquil on Saturday when the large wooden crucifix behind him suddenly fell forward and struck him.

Video of the service captures screams erupting inside the church as worshippers ran to his side and called for help.

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The Archdiocese of Guayaquil confirmed his death in a Facebook statement, identifying him as the parish priest of Perpetuo Socorro Church in its Central Vicariate.

"Our dear Fr. Patricio Alfredo Sánchez Molinari … has departed to the Father’s House to enjoy His presence and His glory," the archdiocese wrote in Spanish.

"Eternal rest grant unto him, O Lord. And let perpetual light shine upon him. May he rest in peace. Amen," the statement concluded in Latin.

The tragedy unfolded just one day after the archdiocese congratulated Sánchez Molinari on the anniversary of his ordination, Ecuadorian news outlet Primicias reported.

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The Mass was being livestreamed on social media when the crucifix fell, recording both the fatal incident and the desperate response from those inside the church.

"Father, Father … call an ambulance," a woman can be heard shouting in the video.

Sánchez Molinari belonged to the Congregation of the Most Holy Redeemer, commonly known as the Redemptorists. Before serving in Guayaquil, he spent several years as parish priest at San Lorenzo in Vinces, in Ecuador’s Los Ríos province, according to Primicias.

His former parish mourned his death in a social media tribute, remembering the dedication and pastoral love he brought to its community, El Universo reported.

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What caused the crucifix to fall remained unclear Sunday. Church officials had not publicly provided an explanation for the collapse.

Pope Leo XIV made a remarkable return to the Vatican on Sunday, appearing before thousands of Catholic faithful in St. Peter's Square just five days after undergoing surgery to remove a cancerous tumor from his lung.

The 71-year-old pontiff delivered his traditional Angelus prayer from a window overlooking the square, marking his first official engagement since being discharged Saturday from Rome's Gemelli hospital, where doctors removed the lower lobe of his right lung.

Leo thanked the faithful for their prayers and support throughout his hospitalization, saying his recent health struggles had brought him closer to those suffering from illness. He also expressed gratitude to the doctors, nurses and hospital staff who cared for him following the operation.

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The first American-born pope said he planned to gradually resume his regular activities with God's help and the continued prayers of the faithful.

During his Angelus address, Leo reflected on one of Jesus' best-known teachings, "Give therefore to the emperor the things that are the emperor's, and to God the things that are God's," urging Christians to live with integrity and resist hypocrisy.

His return came sooner than expected after doctors initially anticipated a hospital stay of approximately one week following Tuesday's surgery.

As he departed the hospital on Saturday, the pope told a reporter in English that he was doing "much better."

Claire Holland, visiting from Jacksonville, Fla., told The Associated Press she felt "very blessed" to witness the pope's return.

"I think there have been millions and millions of prayers. And he is a strong determined man, and I am so happy that he is feeling well enough to do this," Holland said.

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The surgery marked the first major health crisis of Leo's 17-month pontificate. Doctors confirmed that the tumor was adenocarcinoma, the most common form of lung cancer.

Doctors are conducting further testing on the tumor and surrounding lymph nodes to determine the extent of the disease and whether additional treatment, including chemotherapy, immunotherapy or targeted therapy, may be necessary.

The pope is scheduled to visit Uruguay, Argentina and Peru from Nov. 6 through Nov. 17, a demanding itinerary that includes a dozen flights and two helicopter rides to high-altitude destinations.

His surgeon, Dr. Stefano Margaritora, told Vatican News on Saturday that the pope appears well enough to go on the trip.

"The Holy Father has put his heart and soul into his recovery," Margaritora said, adding that he expected Leo to recover fully from the surgery "in another 10 days or so."

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"As for a long trip involving air travel in about three weeks, I would say there are no clinical reasons why it should not take place," Margaritora said.

Fox News’ Courtney Walsh and The Associated Press contributed to this report.