Both the main high school campus and the 9th grade campus were locked down as of 9:30 a.m at the request of Carrollton Police.
"Carrollton Police Department has set a perimeter and is on scene at HHS. Students are safe. More information will be provided as it becomes available," read the school district's Facebook.
WFAA reported that the bomb threat was internal and that "a male caller from within the school said a bomb was located in the orchestra music room at the school..."
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