Dallas police officers and SWAT units combed a parking garage adjacent to the department’s downtown headquarters Saturday after a suspicious person was seen on the garage’s second floor. Authorities confirmed to Fox News that the person was spotted in an area of the garage reserved for police officers and employees and ran away when confronted.

Approximately two hours after the original sighting, a search of the garage turned up no suspicious person or object. Shortly after the search began, Dallas police confirmed that they had “received an anonymous threat against law enforcement across the city” and had taken “precautionary measures” to heighten security. FULL REPORT