Police said Ofc. Robert Fung was working at Curry's SC30 Select HS Showcase when he saw the 66-year-old man in the audience suffering from a medical emergency. He performed CPR on a the man who had stopped breathing and lost consciousness.
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Medics arrived and transported the man to a hospital, where he was reported to be in stable condition.
"The SFPD is proud of Officer Fung and thanks him for taking immediate action during a medical emergency," the department said in a statement on Facebook.
The parade to honor Fung will begin at 10:30 a.m. at Belvedere and Haight streets in San Francisco.
Bay City News contributed to this story.