Another school in Dunwoody was placed on lockdown Monday after police said a threat was made, just weeks after several other schools in the area received threats.

Peachtree Charter Middle School initiated a Level 1 lockdown during the school day after an anonymous threat came in through a phone call, DeKalb County School District officials wrote in a message to parents.

Officers were sent to the schools “as the credibility of the threat (was) assessed,” according to the message, which was also sent to AJC.com. “Please know that PCMS is taking this precaution to support the safety and security of our students and teachers.”

The letter did not say exactly what the threat stated.

About two weeks ago, police said threats came into several other Dunwoody schools, including Vanderlyn, Austin and Kingsley elementary schools, prompting lockdowns.

None of those threats were determined to be credible.

“We have every reason to believe right now that all these incidents are the result of someone ‘swatting,’ someone actively putting these fake threats out there trying to get a response, trying to cause panic and harm to the community,” Dunwoody police Sgt. Robert Parsons said in a Facebook Live broadcast from Austin Elementary on Nov. 16. “And that’s exactly what’s happened.”

In other news:

The crash is blocking all lanes of I-285 NB just before I-20 in DeKalb County.