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Archbishop José H. Gomez is celebrating a special Mass in downtown Los Angeles on Sunday honoring Óscar Arnulfo Romero — the beloved Salvadoran archbishop who would have turned 100 Monday.

Cathedral Our Lady of the Angels is shown in a file photo on March 12, 2013 (Credit: Kevork Djansezian/Getty Images)

Romero died a martyr while celebrating Mass in 1980, assassinated at 62 by a death squad during his country’s brutal civil war. Born Aug. 15, 1917, Romero long faced resistance from conservative forces in Central America and at the Vatican, as some argued that his leftist politics guided his fight for the poor. But in February 2015, Pope Francis declared Romero a martyr, and a month later, he was beatified, a key step toward becoming a Catholic saint.

Sunday’s Mass, which will be in Spanish, began at 12:30 p.m. at the Cathedral of Our Lady of the Angels.

After Mass, the public can view three artifacts tied to Romero — the microphone he often used to deliver messages to parishioners at San Salvador’s Metropolitan Cathedral, a blood-stained cloth recovered from the day he was killed and a photograph of him, which he autographed for a woman who worked with him over the years.

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