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New captain to become Tiburon’s first female police chief

Updated: Jan 17, 2023

Capt. Michelle Jean will become Tiburon’s first female police chief next month as Ryan Monaghan, who took over the department less than two years ago, is leaving effective Feb. 3 to join the San Mateo County Sheriff’s Office.

Tiburon Town Manager Greg Chanis announced the news in a Jan. 5 press release and the town’s newsletter.

In an interview, Chanis said Monaghan informed the town of the news in mid-late November. That was shortly after Jean was hired Nov. 7 as Tiburon’s captain — a role that had been vacant for eight years — and before she was formally introduced to the Town Council at its Dec. 7 meeting. Chanis said the town initially planned to make the announcement Dec. 20 but delayed that after the death of Sgt. Sean Christopher on Dec. 12 and the ensuing closure of town offices for the Christmas and New Year’s holidays.

Monaghan, who lives in Belmont, is a former city of San Mateo police lieutenant who will be joining that county’s Sheriff’s Office as assistant sheriff.

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