Authorities are investigating after more than half a dozen school districts in the DMV area were targeted by hoax phone calls reporting active shooting threats.
Police found no evidence of a shooter at any of the locations.
The schools were in Loudoun County, Warren County, Culpeper County, Arlington County and the District.
At least one school initiated a lockdown as a precaution.
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No shots were fired, and no one was injured.
Police are investigating if the calls are related.