The threat was made just before 9 a.m. on July 5. It prompted a sweep of the building, which houses the Arlington County Police Department’s headquarters and the local courts. No explosives were found.
A similar threat was made last September on police headquarters. No explosives were found that time either.
From an ACPD crime report:
BOMB THREAT, 2017-07050054, 1400 block of N. Courthouse Road. At approximately 8:57 a.m. on July 5, an anonymous subject called in and stated there was a bomb in the building. Multiple units responded to the scene and conducted a search for a device with negative results.