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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.

Ruby Nell Howell was arrested Tuesday, the Oktibbeha County Sheriff's Office said.

Wearing a shirt bearing the logo of Kampgrounds of America, which runs the site, Howell is seen in the video holding a handgun by her side. Jessica Richardson says Howell asked them to leave because they didn’t have a reservation.

Franklin and Jessica Richardson said they were looking for a spot for a picnic and a possible cabin Sunday at Oktibbeha County Lake, near Starkville.

“That’s what the office is for up there, ma’am,” Howell responds.

“We didn’t know, ma’am,” Franklin Richardson tells her.

Adds his wife, “We didn’t know. The only thing you had to do was tell us to leave. We would have left. You did not have to pull a gun.”

Howell puts the gun in her shorts pocket, telling the couple, “Well, I’m just telling you you need to leave because it’s under private ownership. Y’all just can’t be out here.”

Jessica and Franklin Richardson say they were simply scouting a picnic spot and cabin.

Days after the video went viral, Kampgrounds of America said it does not condone the use of firearms on its properties.

“The incident involved a campground employee and two persons seeking to access a lake via the campground’s private property. Unfortunately, the campground employee felt it necessary to display a firearm during the interaction with the two individuals and their dog,” the company said.

Kampgrounds of America describes itself as the world’s largest system of “open-to-the-public campgrounds.” It operates more than 500 sites in the United States and Canada.

Threatening exhibition of weapons is punishable by up to three months in county jail and a maximum fine of $500.

CNN’s Kaylene Chassie, Faith Karimi, Marlena Baldacci and Amanda Watts contributed to this report.