REVERE (CBS) – A Massachusetts State Police trooper was fired for what the department called “unacceptable conduct” for using racial slurs during an off-duty confrontation with a driver in Revere.

State Police said it happened last weekend when the trooper approached a man in a parked car on Revere Beach Blvd. They did not provide any other information about the incident.

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The trooper, who was not identified, was fired Tuesday afternoon. State Police said he graduated with the last recruiting class in May and was assigned to the Danvers barracks on a first year probationary period.

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State Police said they will refer the incident to the Massachusetts Attorney General for review and potential civil or criminal action.

“I am disgusted and disappointed by the conduct that occurred, which is the antithesis of the standards of conduct and personal behavior we expect and demand of our members,” State Police Col. Christopher Mason said in a statement.

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“The action taken today underscores the position I have affirmed since I became Colonel, specifically, that we will have no tolerance for such conduct and will move to resolve such matters as quickly as possible. This subject is not fit to wear the badge or call themselves a member of the Department.”