Mayors and. Ktvus amber lee is live at city hall in San Francisco. She was there when the announcement came late this afternoon. Amber . Reporter julie, the mood at city hall is somber. The announcement came suddenly this afternoon, it was not altogether surprising since the mayor himself had previously acknowledged that reforms in the Police Department are underway. The progress that we made has been meaningful. But it hasnt been fast enough. Not for me, and not for greg. And thats why i have asked chief suhr for his resignation. Reporter the mayor made the announcement late this afternoon after meeting with the chief. At his side, suzy loftus, the president of the Police Commission and deputy chief Toney Chaplin. The mayor named chaplain as acting police chief. This came just hours after after a Police Sergeant shot and killed a 27yearold black woman who police say was driving a stolen car in the bayview shortly before 10 00 a. M. I have previously expressed confidence in chief suhr