A bomb threat and threats of gun violence were made against three schools, Decatur police said in a Facebook post. Those schools include Glennwood Elementary School, Oakhurst Elementary School and Winnona Park Elementary School.

The public charter district said all nine schools were put in a lockdown “out of an abundance of caution.”

Investigators have found no evidence that the threats were credible, Decatur police Lt. Jennifer Ross said.

Officers were on scene at each school, which remained on lockdown until dismissal. All after-school activities were canceled, Superintendent David Dude said.

At one point, elementary school students could be seen evacuating the school, before going back inside.

“We are actively working with the police department to investigate this situation,” the district said in a letter to students. “Students cannot be checked out until the lockdown is lifted. Please do not go to the schools because this will interfere with school safety procedures.”

The district includes one preschool, six elementary schools, one middle school and one high school.

The lockdown comes after a series of threats was made against schools in Dunwoody. None of those threats were deemed to be credible, officials said.

“Officers will be patrolling the schools throughout the city through the end of this week,” the department said on Facebook. “We will re-evaluate after investigators have an opportunity to follow up on potential leads. We will provide updates if and when suspects are identified, arrested or we have additional information that can be released.”

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