MILO, Maine — Selectmen on Tuesday night unanimously accepted the resignation of Police Chief Michael Poulin.

Town Manager Jeff Gahagan said the board received a resignation by mail from Poulin that was effective at the close of business Tuesday. Gahagan said the vote came after an executive session was held to discuss the chief. He would not reveal the details of Poulin’s letter.

Poulin was arrested and charged last month with assault after he allegedly grabbed his wife, Elaine Poulin, by the arms and pinned her against a wall at Elaine’s Basket Cafe and Gift Shop, the business she operates on West Main Street. He is expected to make his initial court appearance on the charge at 8:30 a.m. Monday, April 27, in 13th District Court in Dover-Foxcroft.

After the incident, town officials suspended Poulin with pay pending the outcome of the continuing investigation. Earlier this month, selectmen authorized Gahagan to take “appropriate disciplinary action” against Poulin. Gahagan, who conferred with the town’s attorney about the board’s direction, had not yet taken action.

Poulin, who has served in law enforcement for 30 years, was hired as Milo’s police chief in June 2006.

Sgt. Terry Smith and Patrolman David Henderson will share the chief’s duties until a new chief has been appointed, according to Gahagan.