DOVER, Del. (AP) — The head of the agency charged with enforcing Delaware’s alcohol laws has resigned after being arrested for drunken driving.

Siobahn Sullivan submitted her resignation letter to Secretary of Safety and Homeland Security Lewis Schiliro on Friday, saying she was resigning effective immediately as director of the Division of Alcohol and Tobacco Enforcement.

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Sullivan was stopped for speeding early Thursday on Route 1 near Lewes and subsequently charged with drunken driving. The 45-year-old Sullivan was released pending arraignment, which is scheduled for Oct. 22., and had been placed on administrative leave with pay.

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Sullivan is a retired state police sergeant and was the commander of the executive protection unit assigned to former Gov. Ruth Ann Minner.

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