At approximately 1:30 pm on Tuesday afternoon, Euler Fernando Grandolpho, a 49-year-old unemployed systems analyst, opened fire on the congregation of the Metropolitan Cathedral in Campinas, a city roughly 99 km to the north of São Paulo. Mr. Grandolpho had watched the 12:15 pm mass and as it ended, he walked up to the front of the cathedral, brandishing two weapons—a pistol and a .38 revolver—and began firing at the churchgoers.
Five people were killed and another four were injured. One, an 84-year-old man who was shot in the chest and stomach, was taken to intensive care and his situation remains critical.
After a brief confrontation with the police, Mr. Grandolpho was felled by a shot to the chest, he then shot himself in the head.
This content has been updated, as a fifth victim was confirmed dead on Dec. 12.