A memorial was held at Metropolitan Apostolic Community Church of Christ in Chicago's Bronzeville neighborhood.
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Petty died last month after a long battle with lung cancer. He was 79.
RELATED: Longtime ABC7 reporter Bob Petty, one of first black reporters on Chicago TV, passes away at 79
Former ABC7 reporter Bob Petty passes away at 79
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Petty was one of the first black reporters on Chicago television. He started reporting at ABC7 in 1971 and retired in 2002.