(CNN) An ex-employee of a Mississippi campground, fired last month after pulling a gun on a black couple, was arrested Tuesday, the Oktibbeha County Sheriff's Office said.

Ruby Nell Howell, 70, of Starkville is charged with threatening exhibition of a weapon, according to a news release.

Howell turned herself in Tuesday morning and was released on a $500 bond, the sheriff's office said.

She is scheduled to be in court June 25.

Video of the confrontation showed Howell on May 26 approaching Franklin and Jessica Richardson, along with their dog, as the couple sought a picnic spot and possible cabin on Oktibbeha County Lake near Starkville.

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