On 11 December 2018, a gunman opened fire in the Metropolitan Cathedral in the Brazilian city of Campinas, São Paulo, killing five people and wounding four more.

The five victims of the massacre are (in order of age): Police released the name of the perpetrator as Euler Fernando Grandolpho, a 49-year-old systems analyst with no known criminal record.

According to the Civil Police, the family reported that the shooter was quite a recluse, used to stay in his room, rarely left the house and was undergoing treatment for depression.

A Mass was held in the cathedral the day after the incident to honor the victims with Father Rafael Capelato stating; "We know that you, family members, are crying - and so are we.

"[12] Campinas Mayor Jonas Donizetti declared three days of mourning in the city and used Twitter to express his condolences and horror about the crime.

In the text, the Pope "invites everyone, in the face of this moment of pain, to find comfort and strength in the Resurrected Jesus, asking God that hope does not fade in this hour of testing."