Breed sent a letter to the governor back in October asking him to "consider leniency" and commute her brother's prison sentence, according to the San Francisco Chronicle.
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Napoleon Brown is serving a 44-year sentence for a manslaughter conviction in the death of a San Francisco woman 18-years-ago. But Breed's status as mayor could raise questions about whether the letter constitutes an improper attempt to use her status to influence the governor's decision.
Brown's office has not issued a response.
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