A young person was arrested and multiple firearms were seized Wednesday after police in Washington, D.C., found an “alarming” social media post with a possible threat to a school, law enforcement officials said.

The Metro Transit Police Department (MTPD) said its Criminal Investigation Division found the post referencing a “potential threat” to a D.C. public school. The name of the school was not released.

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Agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and MTPD officers searched a home, found multiple firearms and arrested the juvenile, the agencies said.

The agencies didn’t give further details on the "alarming" social media post or say what charges the juvenile faces. The suspect's exact ag

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